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30580825 = 5211611823
BaseRepresentation
bin111010010101…
…0000001011001
32010112200000011
41310222001121
530312041300
63011241521
7520634632
oct164520131
963480004
1030580825
1116297910
12a2a92a1
136449482
1440c0889
152a40eba
hex1d2a059

30580825 has 24 divisors (see below), whose sum is σ = 42068736. Its totient is φ = 21864000.

The previous prime is 30580813. The next prime is 30580831. The reversal of 30580825 is 52808503.

It is a de Polignac number, because none of the positive numbers 2k-30580825 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 15864 + ... + 17686.

It is an arithmetic number, because the mean of its divisors is an integer number (1752864).

Almost surely, 230580825 is an apocalyptic number.

It is an amenable number.

30580825 is a deficient number, since it is larger than the sum of its proper divisors (11487911).

30580825 is a wasteful number, since it uses less digits than its factorization.

30580825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905 (or 1900 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 30580825 is about 5529.9932188024. The cubic root of 30580825 is about 312.7157337011.

The spelling of 30580825 in words is "thirty million, five hundred eighty thousand, eight hundred twenty-five".

Divisors: 1 5 11 25 55 61 275 305 671 1525 1823 3355 9115 16775 20053 45575 100265 111203 501325 556015 1223233 2780075 6116165 30580825