22450638 has 32 divisors (see below), whose sum is σ = 52706304. Its totient is φ = 6240672.

The previous prime is 22450627. The next prime is 22450643. The reversal of 22450638 is 83605422.

It is a super-2 number, since 2×22450638² = 1008062293214088, which contains 22 as substring.

It is a congruent number.

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, 5670 + ... + 8777.

It is an arithmetic number, because the mean of its divisors is an integer number (1647072).

Almost surely, 2^22450638 is an apocalyptic number.

22450638 is an abundant number, since it is smaller than the sum of its proper divisors (30255666).

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

22450638 is a wasteful number, since it uses less digits than its factorization.

22450638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14496.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 22450638 is about 4738.2104216677. The cubic root of 22450638 is about 282.1042067473.

The spelling of 22450638 in words is "twenty-two million, four hundred fifty thousand, six hundred thirty-eight".