22287120 has 40 divisors (see below), whose sum is σ = 69090816. Its totient is φ = 5943168.

The previous prime is 22287107. The next prime is 22287163. The reversal of 22287120 is 2178222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46192 + ... + 46671.

Almost surely, 2^22287120 is an apocalyptic number.

22287120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22287120 is an abundant number, since it is smaller than the sum of its proper divisors (46803696).

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

22287120 is a wasteful number, since it uses less digits than its factorization.

22287120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92879 (or 92873 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 22287120 is about 4720.9236384420. The cubic root of 22287120 is about 281.4176403043.

The spelling of 22287120 in words is "twenty-two million, two hundred eighty-seven thousand, one hundred twenty".