22387104 has 72 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 7459776.

The previous prime is 22387097. The next prime is 22387139. The reversal of 22387104 is 40178322.

It is a tau number, because it is divible by the number of its divisors (72).

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

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, 6337 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (917280).

Almost surely, 2^22387104 is an apocalyptic number.

22387104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22387104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33022080).

22387104 is an abundant number, since it is smaller than the sum of its proper divisors (43657056).

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

22387104 is an equidigital number, since it uses as much as digits as its factorization.

22387104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904 (or 2884 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 22387104 is about 4731.5012416780. The cubic root of 22387104 is about 281.8378424905.

The spelling of 22387104 in words is "twenty-two million, three hundred eighty-seven thousand, one hundred four".