45643456 has 28 divisors (see below), whose sum is σ = 90805000. Its totient is φ = 22763520.

The previous prime is 45643427. The next prime is 45643471. The reversal of 45643456 is 65434654.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35920 + ... + 37168.

Almost surely, 2^45643456 is an apocalyptic number.

It is an amenable number.

45643456 is a deficient number, since it is larger than the sum of its proper divisors (45161544).

45643456 is a wasteful number, since it uses less digits than its factorization.

45643456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832 (or 1822 counting only the distinct ones).

The product of its digits is 172800, while the sum is 37.

The square root of 45643456 is about 6755.9940793343. The cubic root of 45643456 is about 357.3766500297.

It can be divided in two parts, 456434 and 56, that added together give a triangular number (456490 = T₉₅₅).

The spelling of 45643456 in words is "forty-five million, six hundred forty-three thousand, four hundred fifty-six".