22115450 has 48 divisors (see below), whose sum is σ = 47407680. Its totient is φ = 7518720.

The previous prime is 22115447. The next prime is 22115461. The reversal of 22115450 is 5451122.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 62474 + ... + 62826.

It is an arithmetic number, because the mean of its divisors is an integer number (987660).

Almost surely, 2^22115450 is an apocalyptic number.

22115450 is an abundant number, since it is smaller than the sum of its proper divisors (25292230).

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

22115450 is a wasteful number, since it uses less digits than its factorization.

22115450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 22115450 is about 4702.7066674416. The cubic root of 22115450 is about 280.6932227819.

Adding to 22115450 its reverse (5451122), we get a palindrome (27566572).

The spelling of 22115450 in words is "twenty-two million, one hundred fifteen thousand, four hundred fifty".