22626989 has 16 divisors (see below), whose sum is σ = 29185920. Its totient is φ = 17021760.

The previous prime is 22626973. The next prime is 22627021. The reversal of 22626989 is 98962622.

22626989 = T₃₆₇ + T₃₆₈ + ... + T₅₆₉.

It is a happy number.

It is not a de Polignac number, because 22626989 - 2⁴ = 22626973 is a prime.

It is a super-2 number, since 2×22626989² = 1023961262412242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22626959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2834 + ... + 7299.

It is an arithmetic number, because the mean of its divisors is an integer number (1824120).

Almost surely, 2^22626989 is an apocalyptic number.

22626989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22626989 is a deficient number, since it is larger than the sum of its proper divisors (6558931).

22626989 is a wasteful number, since it uses less digits than its factorization.

22626989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180.

The product of its digits is 186624, while the sum is 44.

The square root of 22626989 is about 4756.7834720534. The cubic root of 22626989 is about 282.8409291385.

The spelling of 22626989 in words is "twenty-two million, six hundred twenty-six thousand, nine hundred eighty-nine".