22821080 has 16 divisors (see below), whose sum is σ = 51347520. Its totient is φ = 9128416.

The previous prime is 22821077. The next prime is 22821091. The reversal of 22821080 is 8012822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285224 + ... + 285303.

It is an arithmetic number, because the mean of its divisors is an integer number (3209220).

Almost surely, 2^22821080 is an apocalyptic number.

22821080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22821080 is an abundant number, since it is smaller than the sum of its proper divisors (28526440).

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

22821080 is a wasteful number, since it uses less digits than its factorization.

22821080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570538 (or 570534 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 22821080 is about 4777.1414046478. The cubic root of 22821080 is about 283.6473504251.

The spelling of 22821080 in words is "twenty-two million, eight hundred twenty-one thousand, eighty".