43890252 has 48 divisors (see below), whose sum is σ = 117422592. Its totient is φ = 12499200.

The previous prime is 43890241. The next prime is 43890289. The reversal of 43890252 is 25209834.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33033 + ... + 34335.

It is an arithmetic number, because the mean of its divisors is an integer number (2446304).

Almost surely, 2^43890252 is an apocalyptic number.

43890252 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

43890252 is an abundant number, since it is smaller than the sum of its proper divisors (73532340).

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

43890252 is a wasteful number, since it uses less digits than its factorization.

43890252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718 (or 1716 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 43890252 is about 6624.9718489968. The cubic root of 43890252 is about 352.7410674338.

The spelling of 43890252 in words is "forty-three million, eight hundred ninety thousand, two hundred fifty-two".