22151980 has 24 divisors (see below), whose sum is σ = 48021120. Its totient is φ = 8574720.

The previous prime is 22151977. The next prime is 22152007. The reversal of 22151980 is 8915122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17245 + ... + 18484.

It is an arithmetic number, because the mean of its divisors is an integer number (2000880).

Almost surely, 2^22151980 is an apocalyptic number.

22151980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22151980 is an abundant number, since it is smaller than the sum of its proper divisors (25869140).

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

22151980 is a wasteful number, since it uses less digits than its factorization.

22151980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35769 (or 35767 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 22151980 is about 4706.5889984149. The cubic root of 22151980 is about 280.8476861841.

The spelling of 22151980 in words is "twenty-two million, one hundred fifty-one thousand, nine hundred eighty".