22319328 has 48 divisors (see below), whose sum is σ = 60616080. Its totient is φ = 7182336.

The previous prime is 22319309. The next prime is 22319329. The reversal of 22319328 is 82391322.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×22319328³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22319295 and 22319304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22319329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1225 + ... + 6792.

It is an arithmetic number, because the mean of its divisors is an integer number (1262835).

Almost surely, 2^22319328 is an apocalyptic number.

It is an amenable number.

22319328 is an abundant number, since it is smaller than the sum of its proper divisors (38296752).

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

22319328 is a wasteful number, since it uses less digits than its factorization.

22319328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8059 (or 8051 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 22319328 is about 4724.3336038006. Note that the first 3 decimals coincide. The cubic root of 22319328 is about 281.5531376478.

The spelling of 22319328 in words is "twenty-two million, three hundred nineteen thousand, three hundred twenty-eight".