22813288 has 8 divisors (see below), whose sum is σ = 42774930. Its totient is φ = 11406640.

The previous prime is 22813279. The next prime is 22813313. The reversal of 22813288 is 88231822.

It can be written as a sum of positive squares in only one way, i.e., 22638564 + 174724 = 4758^2 + 418^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×22813288² = 1040892218741888, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425823 + ... + 1425838.

Almost surely, 2^22813288 is an apocalyptic number.

It is an amenable number.

22813288 is a deficient number, since it is larger than the sum of its proper divisors (19961642).

22813288 is a wasteful number, since it uses less digits than its factorization.

22813288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851667 (or 2851663 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 22813288 is about 4776.3257845335. The cubic root of 22813288 is about 283.6150640223.

It can be divided in two parts, 228132 and 88, that multiplied together give a triangular number (20075616 = T₆₃₃₆).

The spelling of 22813288 in words is "twenty-two million, eight hundred thirteen thousand, two hundred eighty-eight".