22678320 has 80 divisors (see below), whose sum is σ = 80352000. Its totient is φ = 5183232.

The previous prime is 22678307. The next prime is 22678321. The reversal of 22678320 is 2387622.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (22678321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5070 + ... + 8429.

It is an arithmetic number, because the mean of its divisors is an integer number (1004400).

Almost surely, 2^22678320 is an apocalyptic number.

22678320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22678320 is an abundant number, since it is smaller than the sum of its proper divisors (57673680).

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

22678320 is a wasteful number, since it uses less digits than its factorization.

22678320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13522 (or 13516 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 22678320 is about 4762.1759732290. The cubic root of 22678320 is about 283.0546494701.

The spelling of 22678320 in words is "twenty-two million, six hundred seventy-eight thousand, three hundred twenty".