22913286 has 48 divisors (see below), whose sum is σ = 51793392. Its totient is φ = 6747840.

The previous prime is 22913279. The next prime is 22913311. The reversal of 22913286 is 68231922.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 26436 + ... + 27288.

It is an arithmetic number, because the mean of its divisors is an integer number (1079029).

Almost surely, 2^22913286 is an apocalyptic number.

22913286 is the 2559-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22913286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25896696).

22913286 is an abundant number, since it is smaller than the sum of its proper divisors (28880106).

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

22913286 is a wasteful number, since it uses less digits than its factorization.

22913286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917 (or 906 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 22913286 is about 4786.7824266411. The cubic root of 22913286 is about 284.0288521240.

The spelling of 22913286 in words is "twenty-two million, nine hundred thirteen thousand, two hundred eighty-six".