72804626 has 4 divisors (see below), whose sum is σ = 109206942. Its totient is φ = 36402312.

The previous prime is 72804617. The next prime is 72804631. The reversal of 72804626 is 62640827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62640827 = 887 ⋅70621.

It can be written as a sum of positive squares in only one way, i.e., 49716601 + 23088025 = 7051^2 + 4805^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18201155 + ... + 18201158.

Almost surely, 2^72804626 is an apocalyptic number.

72804626 is a deficient number, since it is larger than the sum of its proper divisors (36402316).

72804626 is a wasteful number, since it uses less digits than its factorization.

72804626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36402315.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 72804626 is about 8532.5626865555. The cubic root of 72804626 is about 417.5607398451.

The spelling of 72804626 in words is "seventy-two million, eight hundred four thousand, six hundred twenty-six".