22722810 has 64 divisors (see below), whose sum is σ = 61133184. Its totient is φ = 5356800.

The previous prime is 22722793. The next prime is 22722811. The reversal of 22722810 is 1822722.

It is a happy number.

It is a super-2 number, since 2×22722810² = 1032652188592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22722811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11280 + ... + 13140.

It is an arithmetic number, because the mean of its divisors is an integer number (955206).

Almost surely, 2^22722810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22722810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30566592).

22722810 is an abundant number, since it is smaller than the sum of its proper divisors (38410374).

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

22722810 is a wasteful number, since it uses less digits than its factorization.

22722810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 22722810 is about 4766.8448684638. The cubic root of 22722810 is about 283.2396260664.

It can be divided in two parts, 22722 and 810, that added together give a palindrome (23532).

The spelling of 22722810 in words is "twenty-two million, seven hundred twenty-two thousand, eight hundred ten".