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30580000 = 255411139
BaseRepresentation
bin111010010100…
…1110100100000
32010112121212121
41310221310200
530312030000
63011234024
7520632343
oct164516440
963477777
1030580000
1116297230
12a2a8914
136448c99
1440c045a
152a40b1a
hex1d29d20

30580000 has 120 divisors (see below), whose sum is σ = 82661040. Its totient is φ = 11040000.

The previous prime is 30579977. The next prime is 30580001. The reversal of 30580000 is 8503.

It is a super-3 number, since 3×305800003 (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (30580001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 219931 + ... + 220069.

It is an arithmetic number, because the mean of its divisors is an integer number (688842).

Almost surely, 230580000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30580000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41330520).

30580000 is an abundant number, since it is smaller than the sum of its proper divisors (52081040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30580000 is a wasteful number, since it uses less digits than its factorization.

30580000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 30580000 is about 5529.9186250794. The cubic root of 30580000 is about 312.7129215598.

Adding to 30580000 its reverse (8503), we get a palindrome (30588503).

The spelling of 30580000 in words is "thirty million, five hundred eighty thousand".

Divisors: 1 2 4 5 8 10 11 16 20 22 25 32 40 44 50 55 80 88 100 110 125 139 160 176 200 220 250 275 278 352 400 440 500 550 556 625 695 800 880 1000 1100 1112 1250 1375 1390 1529 1760 2000 2200 2224 2500 2750 2780 3058 3475 4000 4400 4448 5000 5500 5560 6116 6875 6950 7645 8800 10000 11000 11120 12232 13750 13900 15290 17375 20000 22000 22240 24464 27500 27800 30580 34750 38225 44000 48928 55000 55600 61160 69500 76450 86875 110000 111200 122320 139000 152900 173750 191125 220000 244640 278000 305800 347500 382250 556000 611600 695000 764500 955625 1223200 1390000 1529000 1911250 2780000 3058000 3822500 6116000 7645000 15290000 30580000