28502123 has 4 divisors (see below), whose sum is σ = 30694608. Its totient is φ = 26309640.

The previous prime is 28502119. The next prime is 28502137. The reversal of 28502123 is 32120582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28502123 - 2² = 28502119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28502143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1096223 + ... + 1096248.

It is an arithmetic number, because the mean of its divisors is an integer number (7673652).

Almost surely, 2^28502123 is an apocalyptic number.

28502123 is a deficient number, since it is larger than the sum of its proper divisors (2192485).

28502123 is a wasteful number, since it uses less digits than its factorization.

28502123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192484.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 28502123 is about 5338.7379594807. The cubic root of 28502123 is about 305.4633216172.

The spelling of 28502123 in words is "twenty-eight million, five hundred two thousand, one hundred twenty-three".