22639902 has 8 divisors (see below), whose sum is σ = 45279816. Its totient is φ = 7546632.

The previous prime is 22639891. The next prime is 22639921. The reversal of 22639902 is 20993622.

It is a happy number.

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

22639902 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1886653 + ... + 1886664.

It is an arithmetic number, because the mean of its divisors is an integer number (5659977).

Almost surely, 2^22639902 is an apocalyptic number.

22639902 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22639902 is a wasteful number, since it uses less digits than its factorization.

22639902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773322.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 22639902 is about 4758.1406032189. The cubic root of 22639902 is about 282.8947237516.

The spelling of 22639902 in words is "twenty-two million, six hundred thirty-nine thousand, nine hundred two".