22987332 has 36 divisors (see below), whose sum is σ = 61526556. Its totient is φ = 7211520.

The previous prime is 22987331. The next prime is 22987379. The reversal of 22987332 is 23378922.

It can be written as a sum of positive squares in 2 ways, for example, as 9326916 + 13660416 = 3054^2 + 3696^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22987331) 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 11 ways as a sum of consecutive naturals, for example, 18169 + ... + 19392.

It is an arithmetic number, because the mean of its divisors is an integer number (1709071).

Almost surely, 2^22987332 is an apocalyptic number.

It is an amenable number.

22987332 is an abundant number, since it is smaller than the sum of its proper divisors (38539224).

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

22987332 is a wasteful number, since it uses less digits than its factorization.

22987332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37588 (or 37583 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 22987332 is about 4794.5106111052. The cubic root of 22987332 is about 284.3344766473.

The spelling of 22987332 in words is "twenty-two million, nine hundred eighty-seven thousand, three hundred thirty-two".