22422402 has 12 divisors (see below), whose sum is σ = 48581910. Its totient is φ = 7474128.

The previous prime is 22422383. The next prime is 22422403. The reversal of 22422402 is 20422422.

It can be written as a sum of positive squares in only one way, i.e., 18584721 + 3837681 = 4311^2 + 1959^2 .

It is a super-2 number, since 2×22422402² = 1005528222899208, which contains 22 as substring.

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: 1245689 = 22422402 / (2 + 2 + 4 + 2 + 2 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (22422403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622827 + ... + 622862.

Almost surely, 2^22422402 is an apocalyptic number.

22422402 is an abundant number, since it is smaller than the sum of its proper divisors (26159508).

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

22422402 is a wasteful number, since it uses less digits than its factorization.

22422402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245697 (or 1245694 counting only the distinct ones).

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

The square root of 22422402 is about 4735.2298782636. The cubic root of 22422402 is about 281.9858903458.

Adding to 22422402 its reverse (20422422), we get a palindrome (42844824).

The spelling of 22422402 in words is "twenty-two million, four hundred twenty-two thousand, four hundred two".