45199620 has 60 divisors (see below), whose sum is σ = 141797964. Its totient is φ = 12052800.

The previous prime is 45199601. The next prime is 45199631. The reversal of 45199620 is 2699154.

It can be written as a sum of positive squares in 2 ways, for example, as 29942784 + 15256836 = 5472^2 + 3906^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12331 + ... + 15570.

Almost surely, 2^45199620 is an apocalyptic number.

It is an amenable number.

45199620 is an abundant number, since it is smaller than the sum of its proper divisors (96598344).

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

45199620 is a wasteful number, since it uses less digits than its factorization.

45199620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27922 (or 27911 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 45199620 is about 6723.0662647337. The cubic root of 45199620 is about 356.2145006178.

The spelling of 45199620 in words is "forty-five million, one hundred ninety-nine thousand, six hundred twenty".