22287489 has 16 divisors (see below), whose sum is σ = 34070400. Its totient is φ = 12695040.

The previous prime is 22287487. The next prime is 22287491. The reversal of 22287489 is 98478222.

It is an interprime number because it is at equal distance from previous prime (22287487) and next prime (22287491).

It is not a de Polignac number, because 22287489 - 2¹ = 22287487 is a prime.

It is a super-3 number, since 3×22287489³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22287489.

It is not an unprimeable number, because it can be changed into a prime (22287487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5809 + ... + 8849.

It is an arithmetic number, because the mean of its divisors is an integer number (2129400).

Almost surely, 2^22287489 is an apocalyptic number.

It is an amenable number.

22287489 is a deficient number, since it is larger than the sum of its proper divisors (11782911).

22287489 is a wasteful number, since it uses less digits than its factorization.

22287489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400.

The product of its digits is 129024, while the sum is 42.

The square root of 22287489 is about 4720.9627196156. The cubic root of 22287489 is about 281.4191934067.

The spelling of 22287489 in words is "twenty-two million, two hundred eighty-seven thousand, four hundred eighty-nine".