22327920 has 80 divisors (see below), whose sum is σ = 76914720. Its totient is φ = 5953536.

The previous prime is 22327889. The next prime is 22327931. The reversal of 22327920 is 2972322.

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

It is a super-3 number, since 3×22327920³ (a number of 23 digits) contains 333 as substring.

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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3009 + ... + 7328.

It is an arithmetic number, because the mean of its divisors is an integer number (961434).

Almost surely, 2^22327920 is an apocalyptic number.

22327920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22327920 is an abundant number, since it is smaller than the sum of its proper divisors (54586800).

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

22327920 is a wasteful number, since it uses less digits than its factorization.

22327920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10359 (or 10347 counting only the distinct ones).

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

The square root of 22327920 is about 4725.2428509020. The cubic root of 22327920 is about 281.5892617074.

The spelling of 22327920 in words is "twenty-two million, three hundred twenty-seven thousand, nine hundred twenty".