72490971 has 16 divisors (see below), whose sum is σ = 111977984. Its totient is φ = 40855104.

The previous prime is 72490939. The next prime is 72490973. The reversal of 72490971 is 17909427.

It is not a de Polignac number, because 72490971 - 2⁵ = 72490939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72490973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22111 + ... + 25176.

It is an arithmetic number, because the mean of its divisors is an integer number (6998624).

Almost surely, 2^72490971 is an apocalyptic number.

72490971 is a deficient number, since it is larger than the sum of its proper divisors (39487013).

72490971 is a wasteful number, since it uses less digits than its factorization.

72490971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47370.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 72490971 is about 8514.1629653184. The cubic root of 72490971 is about 416.9602352112.

The spelling of 72490971 in words is "seventy-two million, four hundred ninety thousand, nine hundred seventy-one".