20022442 has 16 divisors (see below), whose sum is σ = 33092064. Its totient is φ = 9010000.

The previous prime is 20022437. The next prime is 20022451. The reversal of 20022442 is 24422002.

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, 2284 + ... + 6727.

It is an arithmetic number, because the mean of its divisors is an integer number (2068254).

Almost surely, 2^20022442 is an apocalyptic number.

20022442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20022442 is a deficient number, since it is larger than the sum of its proper divisors (13069622).

20022442 is a wasteful number, since it uses less digits than its factorization.

20022442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9125.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 20022442 is about 4474.6443434088. The cubic root of 20022442 is about 271.5432519751.

Adding to 20022442 its reverse (24422002), we get a palindrome (44444444).

It can be divided in two parts, 2002 and 2442, that multiplied together give a palindrome (4888884).

The spelling of 20022442 in words is "twenty million, twenty-two thousand, four hundred forty-two".