22773312 has 140 divisors (see below), whose sum is σ = 70811136. Its totient is φ = 7223040.

The previous prime is 22773307. The next prime is 22773329. The reversal of 22773312 is 21337722.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 12.

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 19 ways as a sum of consecutive naturals, for example, 119137 + ... + 119327.

Almost surely, 2^22773312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22773312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35405568).

22773312 is an abundant number, since it is smaller than the sum of its proper divisors (48037824).

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

22773312 is a wasteful number, since it uses less digits than its factorization.

22773312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 219 counting only the distinct ones).

The product of its digits is 3528, while the sum is 27.

The square root of 22773312 is about 4772.1391429840. The cubic root of 22773312 is about 283.4493064645.

The spelling of 22773312 in words is "twenty-two million, seven hundred seventy-three thousand, three hundred twelve".