72489807 has 24 divisors (see below), whose sum is σ = 118700400. Its totient is φ = 42259968.

The previous prime is 72489773. The next prime is 72489817. The reversal of 72489807 is 70898427.

It is not a de Polignac number, because 72489807 - 2⁸ = 72489551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72489817) 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 23 ways as a sum of consecutive naturals, for example, 14082 + ... + 18527.

It is an arithmetic number, because the mean of its divisors is an integer number (4945850).

Almost surely, 2^72489807 is an apocalyptic number.

72489807 is a deficient number, since it is larger than the sum of its proper divisors (46210593).

72489807 is a wasteful number, since it uses less digits than its factorization.

72489807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32647 (or 32644 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 72489807 is about 8514.0946083538. The cubic root of 72489807 is about 416.9580034652.

The spelling of 72489807 in words is "seventy-two million, four hundred eighty-nine thousand, eight hundred seven".