22791552 has 128 divisors (see below), whose sum is σ = 70828800. Its totient is φ = 6359040.

The previous prime is 22791529. The next prime is 22791557. The reversal of 22791552 is 25519722.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22791557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163899 + ... + 164037.

It is an arithmetic number, because the mean of its divisors is an integer number (553350).

Almost surely, 2^22791552 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 22791552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35414400).

22791552 is an abundant number, since it is smaller than the sum of its proper divisors (48037248).

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

22791552 is a wasteful number, since it uses less digits than its factorization.

22791552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 212 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 22791552 is about 4774.0498531121. The cubic root of 22791552 is about 283.5249613312.

The spelling of 22791552 in words is "twenty-two million, seven hundred ninety-one thousand, five hundred fifty-two".