28487023 has 8 divisors (see below), whose sum is σ = 30553200. Its totient is φ = 26477568.

The previous prime is 28486987. The next prime is 28487033. The reversal of 28487023 is 32078482.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28487023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28487023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28487033) 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, 13138 + ... + 15151.

It is an arithmetic number, because the mean of its divisors is an integer number (3819150).

Almost surely, 2^28487023 is an apocalyptic number.

28487023 is a deficient number, since it is larger than the sum of its proper divisors (2066177).

28487023 is a wasteful number, since it uses less digits than its factorization.

28487023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28361.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 28487023 is about 5337.3235802226. The cubic root of 28487023 is about 305.4093687831.

The spelling of 28487023 in words is "twenty-eight million, four hundred eighty-seven thousand, twenty-three".