83887880 has 32 divisors (see below), whose sum is σ = 193852440. Its totient is φ = 32647680.

The previous prime is 83887879. The next prime is 83887897. The reversal of 83887880 is 8878838.

It can be written as a sum of positive squares in 4 ways, for example, as 79316836 + 4571044 = 8906^2 + 2138^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26861 + ... + 29820.

Almost surely, 2^83887880 is an apocalyptic number.

It is an amenable number.

83887880 is an abundant number, since it is smaller than the sum of its proper divisors (109964560).

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

83887880 is a wasteful number, since it uses less digits than its factorization.

83887880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56729 (or 56725 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 50.

The square root of 83887880 is about 9159.0327000181. The cubic root of 83887880 is about 437.7569733863.

The spelling of 83887880 in words is "eighty-three million, eight hundred eighty-seven thousand, eight hundred eighty".