23028387 has 12 divisors (see below), whose sum is σ = 32618136. Its totient is φ = 14448640.

The previous prime is 23028371. The next prime is 23028403. The reversal of 23028387 is 78382032.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23028371) and next prime (23028403).

It is not a de Polignac number, because 23028387 - 2⁴ = 23028371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23028307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12414 + ... + 14147.

It is an arithmetic number, because the mean of its divisors is an integer number (2718178).

Almost surely, 2^23028387 is an apocalyptic number.

23028387 is a deficient number, since it is larger than the sum of its proper divisors (9589749).

23028387 is a wasteful number, since it uses less digits than its factorization.

23028387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26598 (or 26581 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 23028387 is about 4798.7901600299. The cubic root of 23028387 is about 284.5036482205.

The spelling of 23028387 in words is "twenty-three million, twenty-eight thousand, three hundred eighty-seven".