22313256 has 32 divisors (see below), whose sum is σ = 63752640. Its totient is φ = 6375168.

The previous prime is 22313227. The next prime is 22313261. The reversal of 22313256 is 65231322.

It is a super-3 number, since 3×22313256³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 in 7 ways as a sum of consecutive naturals, for example, 66241 + ... + 66576.

It is an arithmetic number, because the mean of its divisors is an integer number (1992270).

Almost surely, 2^22313256 is an apocalyptic number.

It is an amenable number.

22313256 is an abundant number, since it is smaller than the sum of its proper divisors (41439384).

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

22313256 is a wasteful number, since it uses less digits than its factorization.

22313256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132833 (or 132829 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 22313256 is about 4723.6909297709. The cubic root of 22313256 is about 281.5276030423.

Adding to 22313256 its reverse (65231322), we get a palindrome (87544578).

The spelling of 22313256 in words is "twenty-two million, three hundred thirteen thousand, two hundred fifty-six".