22887240 has 64 divisors (see below), whose sum is σ = 69465600. Its totient is φ = 6031872.

The previous prime is 22887239. The next prime is 22887251. The reversal of 22887240 is 4278822.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9609 + ... + 11751.

It is an arithmetic number, because the mean of its divisors is an integer number (1085400).

Almost surely, 2^22887240 is an apocalyptic number.

22887240 is a gapful number since it is divisible by the number (20) 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 22887240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34732800).

22887240 is an abundant number, since it is smaller than the sum of its proper divisors (46578360).

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

22887240 is a wasteful number, since it uses less digits than its factorization.

22887240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246 (or 2242 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 22887240 is about 4784.0610363999. The cubic root of 22887240 is about 283.9211908551.

The spelling of 22887240 in words is "twenty-two million, eight hundred eighty-seven thousand, two hundred forty".