20422072 has 32 divisors (see below), whose sum is σ = 41990400. Its totient is φ = 9234400.

The previous prime is 20422043. The next prime is 20422079. The reversal of 20422072 is 27022402.

It is a super-2 number, since 2×20422072² = 834122049546368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20547 + ... + 21517.

It is an arithmetic number, because the mean of its divisors is an integer number (1312200).

Almost surely, 2^20422072 is an apocalyptic number.

20422072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20422072 is an abundant number, since it is smaller than the sum of its proper divisors (21568328).

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

20422072 is a wasteful number, since it uses less digits than its factorization.

20422072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 20422072 is about 4519.0786671621. The cubic root of 20422072 is about 273.3379508771.

Adding to 20422072 its reverse (27022402), we get a palindrome (47444474).

It can be divided in two parts, 2042 and 2072, that added together give a palindrome (4114).

The spelling of 20422072 in words is "twenty million, four hundred twenty-two thousand, seventy-two".