20785022 has 4 divisors (see below), whose sum is σ = 31177536. Its totient is φ = 10392510.

The previous prime is 20785019. The next prime is 20785043. The reversal of 20785022 is 22058702.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20784982 and 20785000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5196254 + ... + 5196257.

It is an arithmetic number, because the mean of its divisors is an integer number (7794384).

Almost surely, 2^20785022 is an apocalyptic number.

20785022 is a deficient number, since it is larger than the sum of its proper divisors (10392514).

20785022 is a wasteful number, since it uses less digits than its factorization.

20785022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10392513.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 20785022 is about 4559.0593328010. The cubic root of 20785022 is about 274.9477454433.

The spelling of 20785022 in words is "twenty million, seven hundred eighty-five thousand, twenty-two".