22621248 has 224 divisors, whose sum is σ = 76809600. Its totient is φ = 6469632.

The previous prime is 22621187. The next prime is 22621253. The reversal of 22621248 is 84212622.

It is a happy number.

It is a super-2 number, since 2×22621248² = 1023441722155008, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426790 + ... + 426842.

It is an arithmetic number, because the mean of its divisors is an integer number (342900).

Almost surely, 2^22621248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22621248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38404800).

22621248 is an abundant number, since it is smaller than the sum of its proper divisors (54188352).

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

22621248 is a wasteful number, since it uses less digits than its factorization.

22621248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 90 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 22621248 is about 4756.1799797737. The cubic root of 22621248 is about 282.8170059801.

The spelling of 22621248 in words is "twenty-two million, six hundred twenty-one thousand, two hundred forty-eight".