22748287 has 8 divisors (see below), whose sum is σ = 23168000. Its totient is φ = 22332024.

The previous prime is 22748273. The next prime is 22748293. The reversal of 22748287 is 78284722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22748287 - 2¹¹ = 22746239 is a prime.

It is a super-2 number, since 2×22748287² = 1034969122868738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22748087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14998 + ... + 16444.

It is an arithmetic number, because the mean of its divisors is an integer number (2896000).

Almost surely, 2^22748287 is an apocalyptic number.

22748287 is a deficient number, since it is larger than the sum of its proper divisors (419713).

22748287 is a wasteful number, since it uses less digits than its factorization.

22748287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725.

The product of its digits is 100352, while the sum is 40.

The square root of 22748287 is about 4769.5164325118. The cubic root of 22748287 is about 283.3454433886.

The spelling of 22748287 in words is "twenty-two million, seven hundred forty-eight thousand, two hundred eighty-seven".