22024020402 has 12 divisors (see below), whose sum is σ = 47718710910. Its totient is φ = 7341340128.

The previous prime is 22024020377. The next prime is 22024020409. The reversal of 22024020402 is 20402042022.

22024020402 is a `hidden beast` number, since 2 + 2 + 0 + 240 + 20 + 402 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15896418561 + 6127601841 = 126081^2 + 78279^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1223556689 = 22024020402 / (2 + 2 + 0 + 2 + 4 + 0 + 2 + 0 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (22024020409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 611778327 + ... + 611778362.

Almost surely, 2^22024020402 is an apocalyptic number.

22024020402 is an abundant number, since it is smaller than the sum of its proper divisors (25694690508).

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

22024020402 is a wasteful number, since it uses less digits than its factorization.

22024020402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223556697 (or 1223556694 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 22024020402 its reverse (20402042022), we get a palindrome (42426062424).

The spelling of 22024020402 in words is "twenty-two billion, twenty-four million, twenty thousand, four hundred two".