45440872 has 16 divisors (see below), whose sum is σ = 85696740. Its totient is φ = 22588416.

The previous prime is 45440861. The next prime is 45440873. The reversal of 45440872 is 27804454.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41139396 + 4301476 = 6414^2 + 2074^2 .

It is not an unprimeable number, because it can be changed into a prime (45440873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15033 + ... + 17800.

Almost surely, 2^45440872 is an apocalyptic number.

It is an amenable number.

45440872 is a deficient number, since it is larger than the sum of its proper divisors (40255868).

45440872 is a wasteful number, since it uses less digits than its factorization.

45440872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33012 (or 33008 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 45440872 is about 6740.9844978312. The cubic root of 45440872 is about 356.8471387980.

The spelling of 45440872 in words is "forty-five million, four hundred forty thousand, eight hundred seventy-two".