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30271480 = 23553109131
BaseRepresentation
bin111001101111…
…0011111111000
32002221221122221
41303132133320
530222141410
63000453424
7515206021
oct163363770
962857587
1030271480
11160a6458
12a17a274
13636b725
14403dc48
1529ce4da
hex1cde7f8

30271480 has 64 divisors (see below), whose sum is σ = 70567200. Its totient is φ = 11681280.

The previous prime is 30271459. The next prime is 30271487. The reversal of 30271480 is 8417203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30271487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231015 + ... + 231145.

Almost surely, 230271480 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 30271480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35283600).

30271480 is an abundant number, since it is smaller than the sum of its proper divisors (40295720).

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

30271480 is a wasteful number, since it uses less digits than its factorization.

30271480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 30271480 is about 5501.9523807463. The cubic root of 30271480 is about 311.6577168957.

Adding to 30271480 its reverse (8417203), we get a palindrome (38688683).

The spelling of 30271480 in words is "thirty million, two hundred seventy-one thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 53 106 109 131 212 218 262 265 424 436 524 530 545 655 872 1048 1060 1090 1310 2120 2180 2620 4360 5240 5777 6943 11554 13886 14279 23108 27772 28558 28885 34715 46216 55544 57116 57770 69430 71395 114232 115540 138860 142790 231080 277720 285580 571160 756787 1513574 3027148 3783935 6054296 7567870 15135740 30271480