20422502 has 4 divisors (see below), whose sum is σ = 30633756. Its totient is φ = 10211250.

The previous prime is 20422499. The next prime is 20422513. The reversal of 20422502 is 20522402.

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

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, 5105624 + ... + 5105627.

It is an arithmetic number, because the mean of its divisors is an integer number (7658439).

Almost surely, 2^20422502 is an apocalyptic number.

20422502 is a deficient number, since it is larger than the sum of its proper divisors (10211254).

20422502 is a wasteful number, since it uses less digits than its factorization.

20422502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10211253.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 20422502 is about 4519.1262429810. The cubic root of 20422502 is about 273.3398692997.

Adding to 20422502 its reverse (20522402), we get a palindrome (40944904).

The spelling of 20422502 in words is "twenty million, four hundred twenty-two thousand, five hundred two".