22621152 has 96 divisors (see below), whose sum is σ = 64012032. Its totient is φ = 6969344.

The previous prime is 22621141. The next prime is 22621163. The reversal of 22621152 is 25112622.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22621141) and next prime (22621163).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135373 + ... + 135539.

It is an arithmetic number, because the mean of its divisors is an integer number (666792).

Almost surely, 2^22621152 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 22621152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32006016).

22621152 is an abundant number, since it is smaller than the sum of its proper divisors (41390880).

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

22621152 is a wasteful number, since it uses less digits than its factorization.

22621152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 272 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 22621152 is about 4756.1698876302. The cubic root of 22621152 is about 282.8166059068.

Adding to 22621152 its reverse (25112622), we get a palindrome (47733774).

The spelling of 22621152 in words is "twenty-two million, six hundred twenty-one thousand, one hundred fifty-two".