72038890 has 32 divisors (see below), whose sum is σ = 161668224. Its totient is φ = 22453440.

The previous prime is 72038881. The next prime is 72038903. The reversal of 72038890 is 9883027.

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, 46009 + ... + 47548.

It is an arithmetic number, because the mean of its divisors is an integer number (5052132).

Almost surely, 2^72038890 is an apocalyptic number.

72038890 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72038890 is an abundant number, since it is smaller than the sum of its proper divisors (89629334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72038890 is a wasteful number, since it uses less digits than its factorization.

72038890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93582.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 72038890 is about 8487.5726801012. The cubic root of 72038890 is about 416.0916534062.

The spelling of 72038890 in words is "seventy-two million, thirty-eight thousand, eight hundred ninety".