22396442 has 4 divisors (see below), whose sum is σ = 33594666. Its totient is φ = 11198220.

The previous prime is 22396441. The next prime is 22396481. The reversal of 22396442 is 24469322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17648401 + 4748041 = 4201^2 + 2179^2 .

It is a super-2 number, since 2×22396442² = 1003201228518728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22396399 and 22396408.

It is not an unprimeable number, because it can be changed into a prime (22396441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5599109 + ... + 5599112.

Almost surely, 2^22396442 is an apocalyptic number.

22396442 is a deficient number, since it is larger than the sum of its proper divisors (11198224).

22396442 is a wasteful number, since it uses less digits than its factorization.

22396442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11198223.

The product of its digits is 20736, while the sum is 32.

The square root of 22396442 is about 4732.4879291975. The cubic root of 22396442 is about 281.8770233203.

The spelling of 22396442 in words is "twenty-two million, three hundred ninety-six thousand, four hundred forty-two".