43220452 has 24 divisors (see below), whose sum is σ = 83869632. Its totient is φ = 19322400.

The previous prime is 43220449. The next prime is 43220467. The reversal of 43220452 is 25402234.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 5368 + ... + 10735.

It is an arithmetic number, because the mean of its divisors is an integer number (3494568).

Almost surely, 2^43220452 is an apocalyptic number.

43220452 is the 5368-th pentagonal number.

It is an amenable number.

43220452 is a deficient number, since it is larger than the sum of its proper divisors (40649180).

43220452 is a wasteful number, since it uses less digits than its factorization.

43220452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16179 (or 16177 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 43220452 is about 6574.2263423159. The cubic root of 43220452 is about 350.9374920818.

Adding to 43220452 its reverse (25402234), we get a palindrome (68622686).

The spelling of 43220452 in words is "forty-three million, two hundred twenty thousand, four hundred fifty-two".