72516004 has 24 divisors (see below), whose sum is σ = 142184448. Its totient is φ = 32070240.

The previous prime is 72515983. The next prime is 72516013. The reversal of 72516004 is 40061527.

It is a super-2 number, since 2×72516004² = 10517141672256032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72516004.

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, 20644 + ... + 23899.

It is an arithmetic number, because the mean of its divisors is an integer number (5924352).

Almost surely, 2^72516004 is an apocalyptic number.

72516004 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

72516004 is a deficient number, since it is larger than the sum of its proper divisors (69668444).

72516004 is a wasteful number, since it uses less digits than its factorization.

72516004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44595 (or 44593 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 72516004 is about 8515.6329183449. The cubic root of 72516004 is about 417.0082253916.

The spelling of 72516004 in words is "seventy-two million, five hundred sixteen thousand, four".