45747840 has 64 divisors (see below), whose sum is σ = 145827360. Its totient is φ = 12198912.

The previous prime is 45747827. The next prime is 45747881. The reversal of 45747840 is 4874754.

It is a tau number, because it is divible by the number of its divisors (64).

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, 9994 + ... + 13833.

Almost surely, 2^45747840 is an apocalyptic number.

45747840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45747840 is an abundant number, since it is smaller than the sum of its proper divisors (100079520).

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

45747840 is a wasteful number, since it uses less digits than its factorization.

45747840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23849 (or 23837 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 39.

The square root of 45747840 is about 6763.7149555551. The cubic root of 45747840 is about 357.6488760024.

The spelling of 45747840 in words is "forty-five million, seven hundred forty-seven thousand, eight hundred forty".