28622756 has 48 divisors (see below), whose sum is σ = 54295920. Its totient is φ = 13178880.

The previous prime is 28622743. The next prime is 28622771. The reversal of 28622756 is 65722682.

It can be written as a sum of positive squares in 8 ways, for example, as 320356 + 28302400 = 566^2 + 5320^2 .

It is a super-2 number, since 2×28622756² = 1638524322071072, which contains 22 as substring.

Its product of digits (80640) is a multiple of the sum of its prime factors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321560 + ... + 321648.

It is an arithmetic number, because the mean of its divisors is an integer number (1131165).

Almost surely, 2^28622756 is an apocalyptic number.

It is an amenable number.

28622756 is a deficient number, since it is larger than the sum of its proper divisors (25673164).

28622756 is a wasteful number, since it uses less digits than its factorization.

28622756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 222 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 28622756 is about 5350.0239251801. The cubic root of 28622756 is about 305.8936649054.

The spelling of 28622756 in words is "twenty-eight million, six hundred twenty-two thousand, seven hundred fifty-six".