20422534 has 16 divisors (see below), whose sum is σ = 34131456. Its totient is φ = 9085000.

The previous prime is 20422517. The next prime is 20422579. The reversal of 20422534 is 43522402.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8842 + ... + 10909.

It is an arithmetic number, because the mean of its divisors is an integer number (2133216).

Almost surely, 2^20422534 is an apocalyptic number.

20422534 is a deficient number, since it is larger than the sum of its proper divisors (13708922).

20422534 is a wasteful number, since it uses less digits than its factorization.

20422534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19811.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 20422534 is about 4519.1297834871. The cubic root of 20422534 is about 273.3400120650.

Adding to 20422534 its reverse (43522402), we get a palindrome (63944936).

The spelling of 20422534 in words is "twenty million, four hundred twenty-two thousand, five hundred thirty-four".