20902622 has 48 divisors (see below), whose sum is σ = 38020752. Its totient is φ = 8536320.

The previous prime is 20902589. The next prime is 20902633. The reversal of 20902622 is 22620902.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159497 + ... + 159627.

It is an arithmetic number, because the mean of its divisors is an integer number (792099).

Almost surely, 2^20902622 is an apocalyptic number.

20902622 is a deficient number, since it is larger than the sum of its proper divisors (17118130).

20902622 is a wasteful number, since it uses less digits than its factorization.

20902622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20902622 is about 4571.9385385195. The cubic root of 20902622 is about 275.4653146979.

The spelling of 20902622 in words is "twenty million, nine hundred two thousand, six hundred twenty-two".