72017004 has 48 divisors (see below), whose sum is σ = 171714816. Its totient is φ = 23486400.

The previous prime is 72017003. The next prime is 72017017. The reversal of 72017004 is 40071027.

It is not an unprimeable number, because it can be changed into a prime (72017003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153979 + ... + 154445.

It is an arithmetic number, because the mean of its divisors is an integer number (3577392).

Almost surely, 2^72017004 is an apocalyptic number.

It is an amenable number.

72017004 is an abundant number, since it is smaller than the sum of its proper divisors (99697812).

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

72017004 is a wasteful number, since it uses less digits than its factorization.

72017004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 72017004 is about 8486.2832853965. The cubic root of 72017004 is about 416.0495117968.

The spelling of 72017004 in words is "seventy-two million, seventeen thousand, four".