22134402 has 12 divisors (see below), whose sum is σ = 47957910. Its totient is φ = 7378128.

The previous prime is 22134377. The next prime is 22134407. The reversal of 22134402 is 20443122.

22134402 is a `hidden beast` number, since 221 + 3 + 440 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11964681 + 10169721 = 3459^2 + 3189^2 .

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: 1229689 = 22134402 / (2 + 2 + 1 + 3 + 4 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (22134407) 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, 614827 + ... + 614862.

Almost surely, 2^22134402 is an apocalyptic number.

22134402 is an abundant number, since it is smaller than the sum of its proper divisors (25823508).

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

22134402 is a wasteful number, since it uses less digits than its factorization.

22134402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229697 (or 1229694 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22134402 is about 4704.7212457275. The cubic root of 22134402 is about 280.7733806066.

Adding to 22134402 its reverse (20443122), we get a palindrome (42577524).

The spelling of 22134402 in words is "twenty-two million, one hundred thirty-four thousand, four hundred two".