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30793864 = 233849233
BaseRepresentation
bin111010101111…
…0000010001000
32010221111020111
41311132002020
530340400424
63020004104
7522513013
oct165360210
963844214
1030793864
1116422982
12a390634
1364c242a
14413837a
152a84194
hex1d5e088

30793864 has 8 divisors (see below), whose sum is σ = 57738510. Its totient is φ = 15396928.

The previous prime is 30793801. The next prime is 30793871. The reversal of 30793864 is 46839703.

It can be written as a sum of positive squares in only one way, i.e., 19624900 + 11168964 = 4430^2 + 3342^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1924609 + ... + 1924624.

Almost surely, 230793864 is an apocalyptic number.

It is an amenable number.

30793864 is a deficient number, since it is larger than the sum of its proper divisors (26944646).

30793864 is a wasteful number, since it uses less digits than its factorization.

30793864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849239 (or 3849235 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 30793864 is about 5549.2219274417. The cubic root of 30793864 is about 313.4402240813.

The spelling of 30793864 in words is "thirty million, seven hundred ninety-three thousand, eight hundred sixty-four".

Divisors: 1 2 4 8 3849233 7698466 15396932 30793864