22238722 has 16 divisors (see below), whose sum is σ = 36614592. Its totient is φ = 10046320.

The previous prime is 22238681. The next prime is 22238729. The reversal of 22238722 is 22783222.

It is not an unprimeable number, because it can be changed into a prime (22238729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648 + ... + 6700.

It is an arithmetic number, because the mean of its divisors is an integer number (2288412).

Almost surely, 2^22238722 is an apocalyptic number.

22238722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22238722 is a deficient number, since it is larger than the sum of its proper divisors (14375870).

22238722 is a wasteful number, since it uses less digits than its factorization.

22238722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6233.

The product of its digits is 5376, while the sum is 28.

The square root of 22238722 is about 4715.7949488925. The cubic root of 22238722 is about 281.2137868107.

The spelling of 22238722 in words is "twenty-two million, two hundred thirty-eight thousand, seven hundred twenty-two".