72571004 has 12 divisors (see below), whose sum is σ = 138544728. Its totient is φ = 32986800.

The previous prime is 72570959. The next prime is 72571007. The reversal of 72571004 is 40017527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72571007) by changing a digit.

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, 824627 + ... + 824714.

It is an arithmetic number, because the mean of its divisors is an integer number (11545394).

Almost surely, 2^72571004 is an apocalyptic number.

It is an amenable number.

72571004 is a deficient number, since it is larger than the sum of its proper divisors (65973724).

72571004 is a wasteful number, since it uses less digits than its factorization.

72571004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649356 (or 1649354 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 72571004 is about 8518.8616610437. The cubic root of 72571004 is about 417.1136258324.

The spelling of 72571004 in words is "seventy-two million, five hundred seventy-one thousand, four".