20022402 has 16 divisors (see below), whose sum is σ = 41127552. Its totient is φ = 6493680.

The previous prime is 20022323. The next prime is 20022407. The reversal of 20022402 is 20422002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20022407) 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, 44874 + ... + 45317.

It is an arithmetic number, because the mean of its divisors is an integer number (2570472).

Almost surely, 2^20022402 is an apocalyptic number.

20022402 is an abundant number, since it is smaller than the sum of its proper divisors (21105150).

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

20022402 is a wasteful number, since it uses less digits than its factorization.

20022402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90233.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 20022402 is about 4474.6398737776. The cubic root of 20022402 is about 271.5430711491.

Adding to 20022402 its reverse (20422002), we get a palindrome (40444404).

The spelling of 20022402 in words is "twenty million, twenty-two thousand, four hundred two".