20622704 has 10 divisors (see below), whose sum is σ = 39956520. Its totient is φ = 10311344.

The previous prime is 20622689. The next prime is 20622737. The reversal of 20622704 is 40722602.

It is a self number, because there is not a number n which added to its sum of digits gives 20622704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644444 + ... + 644475.

It is an arithmetic number, because the mean of its divisors is an integer number (3995652).

Almost surely, 2^20622704 is an apocalyptic number.

It is an amenable number.

20622704 is a deficient number, since it is larger than the sum of its proper divisors (19333816).

20622704 is a wasteful number, since it uses less digits than its factorization.

20622704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288927 (or 1288921 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 20622704 is about 4541.2227428304. Note that the first 3 decimals coincide. The cubic root of 20622704 is about 274.2301509888.

The spelling of 20622704 in words is "twenty million, six hundred twenty-two thousand, seven hundred four".