45781880 has 32 divisors (see below), whose sum is σ = 103807440. Its totient is φ = 18170880.

The previous prime is 45781861. The next prime is 45781919. The reversal of 45781880 is 8818754.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 872 + ... + 9608.

Almost surely, 2^45781880 is an apocalyptic number.

45781880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45781880 is an abundant number, since it is smaller than the sum of its proper divisors (58025560).

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

45781880 is a wasteful number, since it uses less digits than its factorization.

45781880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8879 (or 8875 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 45781880 is about 6766.2308562449. The cubic root of 45781880 is about 357.7375603310.

The spelling of 45781880 in words is "forty-five million, seven hundred eighty-one thousand, eight hundred eighty".