20422737 has 12 divisors (see below), whose sum is σ = 29787264. Its totient is φ = 13482360.

The previous prime is 20422733. The next prime is 20422751. The reversal of 20422737 is 73722402.

It is not a de Polignac number, because 20422737 - 2² = 20422733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20422737.

It is not an unprimeable number, because it can be changed into a prime (20422733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10089 + ... + 11942.

It is an arithmetic number, because the mean of its divisors is an integer number (2482272).

Almost surely, 2^20422737 is an apocalyptic number.

It is an amenable number.

20422737 is a deficient number, since it is larger than the sum of its proper divisors (9364527).

20422737 is a wasteful number, since it uses less digits than its factorization.

20422737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22140 (or 22137 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20422737 is about 4519.1522435076. The cubic root of 20422737 is about 273.3409177286.

The spelling of 20422737 in words is "twenty million, four hundred twenty-two thousand, seven hundred thirty-seven".