45189632 has 20 divisors (see below), whose sum is σ = 90292026. Its totient is φ = 22594560.

The previous prime is 45189623. The next prime is 45189653. The reversal of 45189632 is 23698154.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44943616 + 246016 = 6704^2 + 496^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43619 + ... + 44642.

Almost surely, 2^45189632 is an apocalyptic number.

It is an amenable number.

45189632 is a deficient number, since it is larger than the sum of its proper divisors (45102394).

45189632 is an frugal number, since it uses more digits than its factorization.

45189632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88279 (or 88263 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 45189632 is about 6722.3234078702. The cubic root of 45189632 is about 356.1882604818.

The spelling of 45189632 in words is "forty-five million, one hundred eighty-nine thousand, six hundred thirty-two".