22722832 has 50 divisors (see below), whose sum is σ = 48926990. Its totient is φ = 10222080.

The previous prime is 22722823. The next prime is 22722839. The reversal of 22722832 is 23822722.

It can be written as a sum of positive squares in only one way, i.e., 18974736 + 3748096 = 4356^2 + 1936^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22722832.

It is not an unprimeable number, because it can be changed into a prime (22722839) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 234208 + ... + 234304.

Almost surely, 2^22722832 is an apocalyptic number.

22722832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22722832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24463495).

22722832 is an abundant number, since it is smaller than the sum of its proper divisors (26204158).

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

22722832 is an frugal number, since it uses more digits than its factorization.

22722832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 110 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 22722832 is about 4766.8471760693. The cubic root of 22722832 is about 283.2397174764.

The spelling of 22722832 in words is "twenty-two million, seven hundred twenty-two thousand, eight hundred thirty-two".