22492782 has 48 divisors (see below), whose sum is σ = 54131280. Its totient is φ = 6882192.

The previous prime is 22492759. The next prime is 22492787. The reversal of 22492782 is 28729422.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22492787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125569 + ... + 125747.

It is an arithmetic number, because the mean of its divisors is an integer number (1127735).

Almost surely, 2^22492782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22492782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27065640).

22492782 is an abundant number, since it is smaller than the sum of its proper divisors (31638498).

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

22492782 is a wasteful number, since it uses less digits than its factorization.

22492782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 197 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 22492782 is about 4742.6555852181. The cubic root of 22492782 is about 282.2806169998.

It can be divided in two parts, 22 and 492782, that added together give a square (492804 = 702²).

The spelling of 22492782 in words is "twenty-two million, four hundred ninety-two thousand, seven hundred eighty-two".