22138766 has 8 divisors (see below), whose sum is σ = 35762664. Its totient is φ = 10217880.

The previous prime is 22138763. The next prime is 22138769. The reversal of 22138766 is 66783122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22138763) and next prime (22138769).

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22138763) 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, 425720 + ... + 425771.

It is an arithmetic number, because the mean of its divisors is an integer number (4470333).

Almost surely, 2^22138766 is an apocalyptic number.

22138766 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22138766 is a deficient number, since it is larger than the sum of its proper divisors (13623898).

22138766 is a wasteful number, since it uses less digits than its factorization.

22138766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851506.

The product of its digits is 24192, while the sum is 35.

The square root of 22138766 is about 4705.1850123029. The cubic root of 22138766 is about 280.7918317416.

The spelling of 22138766 in words is "twenty-two million, one hundred thirty-eight thousand, seven hundred sixty-six".