20422635 has 16 divisors (see below), whose sum is σ = 33437184. Its totient is φ = 10638432.

The previous prime is 20422613. The next prime is 20422637. The reversal of 20422635 is 53622402.

It is not a de Polignac number, because 20422635 - 2²⁴ = 3645419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20422637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15187 + ... + 16476.

It is an arithmetic number, because the mean of its divisors is an integer number (2089824).

Almost surely, 2^20422635 is an apocalyptic number.

20422635 is a deficient number, since it is larger than the sum of its proper divisors (13014549).

20422635 is a wasteful number, since it uses less digits than its factorization.

20422635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31714.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 20422635 is about 4519.1409581911. The cubic root of 20422635 is about 273.3404626668.

The spelling of 20422635 in words is "twenty million, four hundred twenty-two thousand, six hundred thirty-five".