22638629 has 8 divisors (see below), whose sum is σ = 24441312. Its totient is φ = 20844720.

The previous prime is 22638617. The next prime is 22638643. The reversal of 22638629 is 92683622.

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

It is a de Polignac number, because none of the positive numbers 2^k-22638629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22638592 and 22638601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22638659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3794 + ... + 7724.

It is an arithmetic number, because the mean of its divisors is an integer number (3055164).

Almost surely, 2^22638629 is an apocalyptic number.

It is an amenable number.

22638629 is a deficient number, since it is larger than the sum of its proper divisors (1802683).

22638629 is a wasteful number, since it uses less digits than its factorization.

22638629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387.

The product of its digits is 62208, while the sum is 38.

The square root of 22638629 is about 4758.0068305962. The cubic root of 22638629 is about 282.8894214358.

The spelling of 22638629 in words is "twenty-two million, six hundred thirty-eight thousand, six hundred twenty-nine".