28622432 has 12 divisors (see below), whose sum is σ = 56350476. Its totient is φ = 14311200.

The previous prime is 28622431. The next prime is 28622437. The reversal of 28622432 is 23422682.

It is a super-2 number, since 2×28622432² = 1638487227189248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28622395 and 28622404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28622431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447194 + ... + 447257.

It is an arithmetic number, because the mean of its divisors is an integer number (4695873).

Almost surely, 2^28622432 is an apocalyptic number.

It is an amenable number.

28622432 is a deficient number, since it is larger than the sum of its proper divisors (27728044).

28622432 is an equidigital number, since it uses as much as digits as its factorization.

28622432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894461 (or 894453 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 28622432 is about 5349.9936448560. The cubic root of 28622432 is about 305.8925106964.

The spelling of 28622432 in words is "twenty-eight million, six hundred twenty-two thousand, four hundred thirty-two".