20422476 has 48 divisors (see below), whose sum is σ = 53222400. Its totient is φ = 6772176.

The previous prime is 20422447. The next prime is 20422499. The reversal of 20422476 is 67422402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28045 + ... + 28763.

It is an arithmetic number, because the mean of its divisors is an integer number (1108800).

Almost surely, 2^20422476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20422476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26611200).

20422476 is an abundant number, since it is smaller than the sum of its proper divisors (32799924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20422476 is a wasteful number, since it uses less digits than its factorization.

20422476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 20422476 is about 4519.1233663179. The cubic root of 20422476 is about 273.3397533028.

Adding to 20422476 its reverse (67422402), we get a palindrome (87844878).

The spelling of 20422476 in words is "twenty million, four hundred twenty-two thousand, four hundred seventy-six".