72897783 has 16 divisors (see below), whose sum is σ = 112104960. Its totient is φ = 41272416.

The previous prime is 72897767. The next prime is 72897791. The reversal of 72897783 is 38779827.

It is not a de Polignac number, because 72897783 - 2⁴ = 72897767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72897743) 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, 13635 + ... + 18212.

It is an arithmetic number, because the mean of its divisors is an integer number (7006560).

Almost surely, 2^72897783 is an apocalyptic number.

72897783 is a deficient number, since it is larger than the sum of its proper divisors (39207177).

72897783 is a wasteful number, since it uses less digits than its factorization.

72897783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31966.

The product of its digits is 1185408, while the sum is 51.

The square root of 72897783 is about 8538.0198524014. The cubic root of 72897783 is about 417.7387602487.

The spelling of 72897783 in words is "seventy-two million, eight hundred ninety-seven thousand, seven hundred eighty-three".