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30662980 = 2253834003
BaseRepresentation
bin111010011111…
…0000101000100
32010200211200221
41310332011010
530322203410
63013114124
7521426305
oct164760504
963624627
1030662980
1116343607
12a328944
13647799a
1441027ac
152a5a4da
hex1d3e144

30662980 has 24 divisors (see below), whose sum is σ = 64576512. Its totient is φ = 12230112.

The previous prime is 30662969. The next prime is 30662987. The reversal of 30662980 is 8926603.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30662987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5659 + ... + 9661.

It is an arithmetic number, because the mean of its divisors is an integer number (2690688).

Almost surely, 230662980 is an apocalyptic number.

It is an amenable number.

30662980 is an abundant number, since it is smaller than the sum of its proper divisors (33913532).

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

30662980 is a wasteful number, since it uses less digits than its factorization.

30662980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395 (or 4393 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 30662980 is about 5537.4163650569. The cubic root of 30662980 is about 312.9955189265.

The spelling of 30662980 in words is "thirty million, six hundred sixty-two thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 383 766 1532 1915 3830 4003 7660 8006 16012 20015 40030 80060 1533149 3066298 6132596 7665745 15331490 30662980