22636428 has 48 divisors (see below), whose sum is σ = 54660480. Its totient is φ = 7286400.

The previous prime is 22636409. The next prime is 22636457. The reversal of 22636428 is 82463622.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 68223 + ... + 68553.

It is an arithmetic number, because the mean of its divisors is an integer number (1138760).

Almost surely, 2^22636428 is an apocalyptic number.

It is an amenable number.

22636428 is an abundant number, since it is smaller than the sum of its proper divisors (32024052).

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

22636428 is a wasteful number, since it uses less digits than its factorization.

22636428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 516 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

The square root of 22636428 is about 4757.7755306445. The cubic root of 22636428 is about 282.8802533335.

The spelling of 22636428 in words is "twenty-two million, six hundred thirty-six thousand, four hundred twenty-eight".