916553872 has 20 divisors (see below), whose sum is σ = 1912425340. Its totient is φ = 423024768.

The previous prime is 916553851. The next prime is 916553879. The reversal of 916553872 is 278355619.

It can be written as a sum of positive squares in 2 ways, for example, as 72999936 + 843553936 = 8544^2 + 29044^2 .

It is not an unprimeable number, because it can be changed into a prime (916553879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2203047 + ... + 2203462.

It is an arithmetic number, because the mean of its divisors is an integer number (95621267).

Almost surely, 2^916553872 is an apocalyptic number.

It is an amenable number.

916553872 is an abundant number, since it is smaller than the sum of its proper divisors (995871468).

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

916553872 is a wasteful number, since it uses less digits than its factorization.

916553872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406530 (or 4406524 counting only the distinct ones).

The product of its digits is 453600, while the sum is 46.

The square root of 916553872 is about 30274.6407410559. The cubic root of 916553872 is about 971.3729352055.

The spelling of 916553872 in words is "nine hundred sixteen million, five hundred fifty-three thousand, eight hundred seventy-two".