22639630 has 32 divisors (see below), whose sum is σ = 44100000. Its totient is φ = 8318592.

The previous prime is 22639619. The next prime is 22639637. The reversal of 22639630 is 3693622.

It is a junction number, because it is equal to n+sod(n) for n = 22639592 and 22639601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22639637) 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, 45121 + ... + 45619.

It is an arithmetic number, because the mean of its divisors is an integer number (1378125).

Almost surely, 2^22639630 is an apocalyptic number.

22639630 is a deficient number, since it is larger than the sum of its proper divisors (21460370).

22639630 is a wasteful number, since it uses less digits than its factorization.

22639630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 22639630 is about 4758.1120205392. The cubic root of 22639630 is about 282.8935908304.

The spelling of 22639630 in words is "twenty-two million, six hundred thirty-nine thousand, six hundred thirty".