22115300 has 36 divisors (see below), whose sum is σ = 50817060. Its totient is φ = 8325120.

The previous prime is 22115299. The next prime is 22115311. The reversal of 22115300 is 351122.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 529984 + 21585316 = 728^2 + 4646^2 .

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 11 ways as a sum of consecutive naturals, for example, 4805 + ... + 8204.

It is an arithmetic number, because the mean of its divisors is an integer number (1411585).

Almost surely, 2^22115300 is an apocalyptic number.

22115300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22115300 is an abundant number, since it is smaller than the sum of its proper divisors (28701760).

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

22115300 is a wasteful number, since it uses less digits than its factorization.

22115300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13040 (or 13033 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 22115300 is about 4702.6907191522. The cubic root of 22115300 is about 280.6925881715.

Adding to 22115300 its reverse (351122), we get a palindrome (22466422).

It can be divided in two parts, 221 and 15300, that multiplied together give a triangular number (3381300 = T₂₆₀₀).

The spelling of 22115300 in words is "twenty-two million, one hundred fifteen thousand, three hundred".