20422454 has 16 divisors (see below), whose sum is σ = 34727280. Its totient is φ = 8929440.

The previous prime is 20422447. The next prime is 20422499. The reversal of 20422454 is 45422402.

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, 20177 + ... + 21164.

It is an arithmetic number, because the mean of its divisors is an integer number (2170455).

Almost surely, 2^20422454 is an apocalyptic number.

20422454 is a deficient number, since it is larger than the sum of its proper divisors (14304826).

20422454 is a wasteful number, since it uses less digits than its factorization.

20422454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41375.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 20422454 is about 4519.1209322168. The cubic root of 20422454 is about 273.3396551516.

Adding to 20422454 its reverse (45422402), we get a palindrome (65844856).

The spelling of 20422454 in words is "twenty million, four hundred twenty-two thousand, four hundred fifty-four".