22355629 has 4 divisors (see below), whose sum is σ = 23670684. Its totient is φ = 21040576.

The previous prime is 22355623. The next prime is 22355633. The reversal of 22355629 is 92655322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92655322 = 2 ⋅46327661.

It can be written as a sum of positive squares in 2 ways, for example, as 12602500 + 9753129 = 3550^2 + 3123^2 .

It is a cyclic number.

It is not a de Polignac number, because 22355629 - 2³ = 22355621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22355594 and 22355603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22355621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657502 + ... + 657535.

It is an arithmetic number, because the mean of its divisors is an integer number (5917671).

Almost surely, 2^22355629 is an apocalyptic number.

It is an amenable number.

22355629 is a deficient number, since it is larger than the sum of its proper divisors (1315055).

22355629 is a wasteful number, since it uses less digits than its factorization.

22355629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315054.

The product of its digits is 32400, while the sum is 34.

The square root of 22355629 is about 4728.1739604207. The cubic root of 22355629 is about 281.7056978617.

The spelling of 22355629 in words is "twenty-two million, three hundred fifty-five thousand, six hundred twenty-nine".