72680404 has 12 divisors (see below), whose sum is σ = 127953504. Its totient is φ = 36122264.

The previous prime is 72680353. The next prime is 72680407. The reversal of 72680404 is 40408627.

It is a super-2 number, since 2×72680404² = 10564882251206432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72680407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53734 + ... + 55069.

It is an arithmetic number, because the mean of its divisors is an integer number (10662792).

Almost surely, 2^72680404 is an apocalyptic number.

It is an amenable number.

72680404 is a deficient number, since it is larger than the sum of its proper divisors (55273100).

72680404 is a wasteful number, since it uses less digits than its factorization.

72680404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108974 (or 108972 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 72680404 is about 8525.2802886474. The cubic root of 72680404 is about 417.3231186844.

The spelling of 72680404 in words is "seventy-two million, six hundred eighty thousand, four hundred four".