72056890 has 16 divisors (see below), whose sum is σ = 129800232. Its totient is φ = 28801024.

The previous prime is 72056869. The next prime is 72056899. The reversal of 72056890 is 9865027.

It can be written as a sum of positive squares in 4 ways, for example, as 71284249 + 772641 = 8443^2 + 879^2 .

It is not an unprimeable number, because it can be changed into a prime (72056899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21402 + ... + 24538.

Almost surely, 2^72056890 is an apocalyptic number.

72056890 is a deficient number, since it is larger than the sum of its proper divisors (57743342).

72056890 is a wasteful number, since it uses less digits than its factorization.

72056890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 72056890 is about 8488.6329877077. The cubic root of 72056890 is about 416.1263061058.

The spelling of 72056890 in words is "seventy-two million, fifty-six thousand, eight hundred ninety".