22821148 has 24 divisors (see below), whose sum is σ = 45779552. Its totient is φ = 9751104.

The previous prime is 22821131. The next prime is 22821163. The reversal of 22821148 is 84112822.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 10090 + ... + 12142.

Almost surely, 2^22821148 is an apocalyptic number.

22821148 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22821148 is an abundant number, since it is smaller than the sum of its proper divisors (22958404).

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

22821148 is a wasteful number, since it uses less digits than its factorization.

22821148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461 (or 2459 counting only the distinct ones).

The product of its digits is 2048, while the sum is 28.

The square root of 22821148 is about 4777.1485218695. The cubic root of 22821148 is about 283.6476321530.

The spelling of 22821148 in words is "twenty-two million, eight hundred twenty-one thousand, one hundred forty-eight".