45630640 has 40 divisors (see below), whose sum is σ = 115738128. Its totient is φ = 16592640.

The previous prime is 45630619. The next prime is 45630677. The reversal of 45630640 is 4603654.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 45630599 and 45630608.

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, 25047 + ... + 26806.

Almost surely, 2^45630640 is an apocalyptic number.

45630640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45630640 is an abundant number, since it is smaller than the sum of its proper divisors (70107488).

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

45630640 is a wasteful number, since it uses less digits than its factorization.

45630640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51877 (or 51871 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 45630640 is about 6755.0455216823. The cubic root of 45630640 is about 357.3431982252.

The spelling of 45630640 in words is "forty-five million, six hundred thirty thousand, six hundred forty".