920220872 has 16 divisors (see below), whose sum is σ = 1726350300. Its totient is φ = 459860800.

The previous prime is 920220859. The next prime is 920220881. The reversal of 920220872 is 278022029.

It can be written as a sum of positive squares in 2 ways, for example, as 917241796 + 2979076 = 30286^2 + 1726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15047 + ... + 45462.

Almost surely, 2^920220872 is an apocalyptic number.

It is an amenable number.

920220872 is a deficient number, since it is larger than the sum of its proper divisors (806129428).

920220872 is a wasteful number, since it uses less digits than its factorization.

920220872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62416 (or 62412 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 920220872 is about 30335.1425248012. The cubic root of 920220872 is about 972.6666524690. Note that the first 4 decimals are identical.

The spelling of 920220872 in words is "nine hundred twenty million, two hundred twenty thousand, eight hundred seventy-two".