45173640 has 64 divisors (see below), whose sum is σ = 142660800. Its totient is φ = 11411712.

The previous prime is 45173617. The next prime is 45173651. The reversal of 45173640 is 4637154.

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

It is a junction number, because it is equal to n+sod(n) for n = 45173598 and 45173607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7627 + ... + 12186.

It is an arithmetic number, because the mean of its divisors is an integer number (2229075).

Almost surely, 2^45173640 is an apocalyptic number.

45173640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45173640 is an abundant number, since it is smaller than the sum of its proper divisors (97487160).

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

45173640 is a wasteful number, since it uses less digits than its factorization.

45173640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19846 (or 19842 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 45173640 is about 6721.1338329184. The cubic root of 45173640 is about 356.1462387873.

The spelling of 45173640 in words is "forty-five million, one hundred seventy-three thousand, six hundred forty".