22279320 has 192 divisors, whose sum is σ = 86594400. Its totient is φ = 5080320.

The previous prime is 22279319. The next prime is 22279331. The reversal of 22279320 is 2397222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52710 + ... + 53130.

Almost surely, 2^22279320 is an apocalyptic number.

22279320 is a gapful number since it is divisible by the number (20) 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 22279320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43297200).

22279320 is an abundant number, since it is smaller than the sum of its proper divisors (64315080).

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

22279320 is a wasteful number, since it uses less digits than its factorization.

22279320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 22279320 is about 4720.0974566210. The cubic root of 22279320 is about 281.3848064864.

The spelling of 22279320 in words is "twenty-two million, two hundred seventy-nine thousand, three hundred twenty".