43997472 has 48 divisors (see below), whose sum is σ = 128328480. Its totient is φ = 14665536.

The previous prime is 43997467. The next prime is 43997489. The reversal of 43997472 is 27479934.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24598 + ... + 26325.

It is an arithmetic number, because the mean of its divisors is an integer number (2673510).

Almost surely, 2^43997472 is an apocalyptic number.

It is an amenable number.

43997472 is an abundant number, since it is smaller than the sum of its proper divisors (84331008).

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

43997472 is a wasteful number, since it uses less digits than its factorization.

43997472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50942 (or 50928 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 43997472 is about 6633.0590228039. The cubic root of 43997472 is about 353.0280722512.

The spelling of 43997472 in words is "forty-three million, nine hundred ninety-seven thousand, four hundred seventy-two".