45471720 has 64 divisors (see below), whose sum is σ = 155905920. Its totient is φ = 10393344.

The previous prime is 45471709. The next prime is 45471733. The reversal of 45471720 is 2717454.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26227 + ... + 27906.

It is an arithmetic number, because the mean of its divisors is an integer number (2436030).

Almost surely, 2^45471720 is an apocalyptic number.

45471720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45471720 is an abundant number, since it is smaller than the sum of its proper divisors (110434200).

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

45471720 is a wasteful number, since it uses less digits than its factorization.

45471720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54154 (or 54150 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 45471720 is about 6743.2722027218. The cubic root of 45471720 is about 356.9278703071.

The spelling of 45471720 in words is "forty-five million, four hundred seventy-one thousand, seven hundred twenty".