22138726 has 8 divisors (see below), whose sum is σ = 35161560. Its totient is φ = 10418208.

The previous prime is 22138651. The next prime is 22138733. The reversal of 22138726 is 62783122.

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

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, 325536 + ... + 325603.

It is an arithmetic number, because the mean of its divisors is an integer number (4395195).

Almost surely, 2^22138726 is an apocalyptic number.

22138726 is a deficient number, since it is larger than the sum of its proper divisors (13022834).

22138726 is a wasteful number, since it uses less digits than its factorization.

22138726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651158.

The product of its digits is 8064, while the sum is 31.

The square root of 22138726 is about 4705.1807616711. The cubic root of 22138726 is about 280.7916626313.

The spelling of 22138726 in words is "twenty-two million, one hundred thirty-eight thousand, seven hundred twenty-six".