13172004 has 24 divisors (see below), whose sum is σ = 34149920. Its totient is φ = 4390632.

The previous prime is 13171987. The next prime is 13172023. The reversal of 13172004 is 40027131.

13172004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60874 + ... + 61089.

Almost surely, 2^13172004 is an apocalyptic number.

It is an amenable number.

13172004 is an abundant number, since it is smaller than the sum of its proper divisors (20977916).

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

13172004 is a wasteful number, since it uses less digits than its factorization.

13172004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121976 (or 121968 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 13172004 is about 3629.3255571800. The cubic root of 13172004 is about 236.1659514579.

Adding to 13172004 its reverse (40027131), we get a palindrome (53199135).

It can be divided in two parts, 1317 and 2004, that added together give a triangular number (3321 = T₈₁).

The spelling of 13172004 in words is "thirteen million, one hundred seventy-two thousand, four".