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13872004 = 2231111871
BaseRepresentation
bin110100111010…
…101110000100
3222002202210221
4310322232010
512022401004
61213154124
7225624106
oct64725604
928082727
1013872004
117915273
12478b944
132b490b3
141bb1576
151340354
hexd3ab84

13872004 has 12 divisors (see below), whose sum is σ = 25059328. Its totient is φ = 6712200.

The previous prime is 13871999. The next prime is 13872007. The reversal of 13872004 is 40027831.

13872004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13872004.

It is not an unprimeable number, because it can be changed into a prime (13872007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55812 + ... + 56059.

Almost surely, 213872004 is an apocalyptic number.

It is an amenable number.

13872004 is a deficient number, since it is larger than the sum of its proper divisors (11187324).

13872004 is a wasteful number, since it uses less digits than its factorization.

13872004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111906 (or 111904 counting only the distinct ones).

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

The square root of 13872004 is about 3724.5139280180. The cubic root of 13872004 is about 240.2774799892.

Adding to 13872004 its reverse (40027831), we get a palindrome (53899835).

The spelling of 13872004 in words is "thirteen million, eight hundred seventy-two thousand, four".

Divisors: 1 2 4 31 62 124 111871 223742 447484 3468001 6936002 13872004