43224728 has 16 divisors (see below), whose sum is σ = 84570480. Its totient is φ = 20672608.

The previous prime is 43224689. The next prime is 43224737. The reversal of 43224728 is 82742234.

It is a super-2 number, since 2×43224728² = 3736754221347968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43224694 and 43224703.

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, 117275 + ... + 117642.

It is an arithmetic number, because the mean of its divisors is an integer number (5285655).

Almost surely, 2^43224728 is an apocalyptic number.

It is an amenable number.

43224728 is a deficient number, since it is larger than the sum of its proper divisors (41345752).

43224728 is a wasteful number, since it uses less digits than its factorization.

43224728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234946 (or 234942 counting only the distinct ones).

The product of its digits is 21504, while the sum is 32.

The square root of 43224728 is about 6574.5515436416. The cubic root of 43224728 is about 350.9490649920.

The spelling of 43224728 in words is "forty-three million, two hundred twenty-four thousand, seven hundred twenty-eight".