22129488 has 60 divisors (see below), whose sum is σ = 62287680. Its totient is φ = 7334208.

The previous prime is 22129423. The next prime is 22129501. The reversal of 22129488 is 88492122.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 34095 + ... + 34737.

It is an arithmetic number, because the mean of its divisors is an integer number (1038128).

Almost surely, 2^22129488 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 22129488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31143840).

22129488 is an abundant number, since it is smaller than the sum of its proper divisors (40158192).

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

22129488 is a wasteful number, since it uses less digits than its factorization.

22129488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 887 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 22129488 is about 4704.1989753836. The cubic root of 22129488 is about 280.7526011505.

The spelling of 22129488 in words is "twenty-two million, one hundred twenty-nine thousand, four hundred eighty-eight".