43628916 has 12 divisors (see below), whose sum is σ = 101800832. Its totient is φ = 14542968.

The previous prime is 43628909. The next prime is 43628927. The reversal of 43628916 is 61982634.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×43628916² = 3806964622670112, which contains 22 as substring.

It is a congruent number.

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, 1817860 + ... + 1817883.

Almost surely, 2^43628916 is an apocalyptic number.

It is an amenable number.

43628916 is an abundant number, since it is smaller than the sum of its proper divisors (58171916).

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

43628916 is a wasteful number, since it uses less digits than its factorization.

43628916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635750 (or 3635748 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 43628916 is about 6605.2188457310. The cubic root of 43628916 is about 352.0395638209.

It can be divided in two parts, 43628 and 916, that added together give a palindrome (44544).

The spelling of 43628916 in words is "forty-three million, six hundred twenty-eight thousand, nine hundred sixteen".