22538870 has 8 divisors (see below), whose sum is σ = 40569984. Its totient is φ = 9015544.

The previous prime is 22538869. The next prime is 22538917. The reversal of 22538870 is 7883522.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22538870.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1126934 + ... + 1126953.

It is an arithmetic number, because the mean of its divisors is an integer number (5071248).

Almost surely, 2^22538870 is an apocalyptic number.

22538870 is a deficient number, since it is larger than the sum of its proper divisors (18031114).

22538870 is a wasteful number, since it uses less digits than its factorization.

22538870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253894.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 22538870 is about 4747.5119799744. The cubic root of 22538870 is about 282.4732843402.

The spelling of 22538870 in words is "twenty-two million, five hundred thirty-eight thousand, eight hundred seventy".