22890156 has 24 divisors (see below), whose sum is σ = 53512704. Its totient is φ = 7615440.

The previous prime is 22890151. The next prime is 22890163. The reversal of 22890156 is 65109822.

It is not an unprimeable number, because it can be changed into a prime (22890151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6061 + ... + 9083.

It is an arithmetic number, because the mean of its divisors is an integer number (2229696).

Almost surely, 2^22890156 is an apocalyptic number.

It is an amenable number.

22890156 is an abundant number, since it is smaller than the sum of its proper divisors (30622548).

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

22890156 is a wasteful number, since it uses less digits than its factorization.

22890156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3661 (or 3659 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 22890156 is about 4784.3657886913. The cubic root of 22890156 is about 283.9332482145.

Adding to 22890156 its reverse (65109822), we get a palindrome (87999978).

The spelling of 22890156 in words is "twenty-two million, eight hundred ninety thousand, one hundred fifty-six".