22520638 has 8 divisors (see below), whose sum is σ = 38606832. Its totient is φ = 9651696.

The previous prime is 22520633. The next prime is 22520669. The reversal of 22520638 is 83602522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804295 + ... + 804322.

It is an arithmetic number, because the mean of its divisors is an integer number (4825854).

Almost surely, 2^22520638 is an apocalyptic number.

22520638 is a deficient number, since it is larger than the sum of its proper divisors (16086194).

22520638 is a wasteful number, since it uses less digits than its factorization.

22520638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608626.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 22520638 is about 4745.5914278412. The cubic root of 22520638 is about 282.3970982937.

The spelling of 22520638 in words is "twenty-two million, five hundred twenty thousand, six hundred thirty-eight".