20224072 has 16 divisors (see below), whose sum is σ = 41367600. Its totient is φ = 9192720.

The previous prime is 20224069. The next prime is 20224081. The reversal of 20224072 is 27042202.

It is a super-2 number, since 2×20224072² = 818026176522368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114822 + ... + 114997.

It is an arithmetic number, because the mean of its divisors is an integer number (2585475).

Almost surely, 2^20224072 is an apocalyptic number.

20224072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20224072 is an abundant number, since it is smaller than the sum of its proper divisors (21143528).

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

20224072 is a wasteful number, since it uses less digits than its factorization.

20224072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229836 (or 229832 counting only the distinct ones).

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

The square root of 20224072 is about 4497.1181883513. The cubic root of 20224072 is about 272.4517076277.

Adding to 20224072 its reverse (27042202), we get a palindrome (47266274).

The spelling of 20224072 in words is "twenty million, two hundred twenty-four thousand, seventy-two".