22961398 has 8 divisors (see below), whose sum is σ = 35243208. Its totient is φ = 11213664.

The previous prime is 22961387. The next prime is 22961399. The reversal of 22961398 is 89316922.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22961398² = 1054451596228808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22961398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22961399) 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, 133411 + ... + 133582.

It is an arithmetic number, because the mean of its divisors is an integer number (4405401).

Almost surely, 2^22961398 is an apocalyptic number.

22961398 is a deficient number, since it is larger than the sum of its proper divisors (12281810).

22961398 is a wasteful number, since it uses less digits than its factorization.

22961398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267038.

The product of its digits is 46656, while the sum is 40.

The square root of 22961398 is about 4791.8052965453. The cubic root of 22961398 is about 284.2275089616.

The spelling of 22961398 in words is "twenty-two million, nine hundred sixty-one thousand, three hundred ninety-eight".