72570890 has 32 divisors (see below), whose sum is σ = 149990400. Its totient is φ = 24764544.

The previous prime is 72570887. The next prime is 72570913. The reversal of 72570890 is 9807527.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13286 + ... + 17934.

It is an arithmetic number, because the mean of its divisors is an integer number (4687200).

Almost surely, 2^72570890 is an apocalyptic number.

72570890 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72570890 is an abundant number, since it is smaller than the sum of its proper divisors (77419510).

72570890 is a wasteful number, since it uses less digits than its factorization.

72570890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4886.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 72570890 is about 8518.8549700062. The cubic root of 72570890 is about 417.1134074211.

The spelling of 72570890 in words is "seventy-two million, five hundred seventy thousand, eight hundred ninety".