22290352 has 20 divisors (see below), whose sum is σ = 49357456. Its totient is φ = 9552960.

The previous prime is 22290343. The next prime is 22290409. The reversal of 22290352 is 25309222.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99399 + ... + 99622.

Almost surely, 2^22290352 is an apocalyptic number.

It is an amenable number.

22290352 is an abundant number, since it is smaller than the sum of its proper divisors (27067104).

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

22290352 is a wasteful number, since it uses less digits than its factorization.

22290352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199036 (or 199030 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 22290352 is about 4721.2659319297. The cubic root of 22290352 is about 281.4312430466.

Adding to 22290352 its reverse (25309222), we get a palindrome (47599574).

The spelling of 22290352 in words is "twenty-two million, two hundred ninety thousand, three hundred fifty-two".