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30864404 = 2275710193
BaseRepresentation
bin111010110111…
…1010000010100
32011002002000002
41311233100110
530400130104
63021310432
7523225454
oct165572024
964062002
1030864404
111647097a
12a405418
13651857c
144155d64
152a9a01e
hex1d6f414

30864404 has 12 divisors (see below), whose sum is σ = 54089364. Its totient is φ = 15410304.

The previous prime is 30864389. The next prime is 30864419. The reversal of 30864404 is 40446803.

It is an interprime number because it is at equal distance from previous prime (30864389) and next prime (30864419).

It can be written as a sum of positive squares in 2 ways, for example, as 20611600 + 10252804 = 4540^2 + 3202^2 .

It is a super-2 number, since 2×308644042 = 1905222868550432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2069 + ... + 8124.

It is an arithmetic number, because the mean of its divisors is an integer number (4507447).

Almost surely, 230864404 is an apocalyptic number.

It is an amenable number.

30864404 is a deficient number, since it is larger than the sum of its proper divisors (23224960).

30864404 is a wasteful number, since it uses less digits than its factorization.

30864404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10954 (or 10952 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 30864404 is about 5555.5741377467. The cubic root of 30864404 is about 313.6793757537.

The spelling of 30864404 in words is "thirty million, eight hundred sixty-four thousand, four hundred four".

Divisors: 1 2 4 757 1514 3028 10193 20386 40772 7716101 15432202 30864404