43997130 has 48 divisors (see below), whose sum is σ = 114758280. Its totient is φ = 11695104.

The previous prime is 43997119. The next prime is 43997159. The reversal of 43997130 is 3179934.

43997130 is a `hidden beast` number, since 439 + 97 + 130 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 15705369 + 28291761 = 3963^2 + 5319^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38406 + ... + 39534.

Almost surely, 2^43997130 is an apocalyptic number.

43997130 is an abundant number, since it is smaller than the sum of its proper divisors (70761150).

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

43997130 is a wasteful number, since it uses less digits than its factorization.

43997130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 43997130 is about 6633.0332427932. The cubic root of 43997130 is about 353.0271575326.

The spelling of 43997130 in words is "forty-three million, nine hundred ninety-seven thousand, one hundred thirty".