45273644 has 24 divisors (see below), whose sum is σ = 87633168. Its totient is φ = 20329920.

The previous prime is 45273593. The next prime is 45273649. The reversal of 45273644 is 44637254.

45273644 is nontrivially palindromic in base 5.

It is not an unprimeable number, because it can be changed into a prime (45273649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9842 + ... + 13689.

It is an arithmetic number, because the mean of its divisors is an integer number (3651382).

Almost surely, 2^45273644 is an apocalyptic number.

It is an amenable number.

45273644 is a deficient number, since it is larger than the sum of its proper divisors (42359524).

45273644 is a wasteful number, since it uses less digits than its factorization.

45273644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23585 (or 23583 counting only the distinct ones).

The product of its digits is 80640, while the sum is 35.

The square root of 45273644 is about 6728.5692387015. The cubic root of 45273644 is about 356.4088535839.

The spelling of 45273644 in words is "forty-five million, two hundred seventy-three thousand, six hundred forty-four".