22328872 has 8 divisors (see below), whose sum is σ = 41866650. Its totient is φ = 11164432.

The previous prime is 22328851. The next prime is 22328879. The reversal of 22328872 is 27882322.

It can be written as a sum of positive squares in only one way, i.e., 11792356 + 10536516 = 3434^2 + 3246^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×22328872³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22328879) 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 as a sum of consecutive naturals, namely, 1395547 + ... + 1395562.

Almost surely, 2^22328872 is an apocalyptic number.

It is an amenable number.

22328872 is a deficient number, since it is larger than the sum of its proper divisors (19537778).

22328872 is a wasteful number, since it uses less digits than its factorization.

22328872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791115 (or 2791111 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 22328872 is about 4725.3435853914. The cubic root of 22328872 is about 281.5932637098.

The spelling of 22328872 in words is "twenty-two million, three hundred twenty-eight thousand, eight hundred seventy-two".