28361523 has 8 divisors (see below), whose sum is σ = 38435536. Its totient is φ = 18597600.

The previous prime is 28361483. The next prime is 28361537. The reversal of 28361523 is 32516382.

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

It is a de Polignac number, because none of the positive numbers 2^k-28361523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28361563) 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, 77308 + ... + 77673.

It is an arithmetic number, because the mean of its divisors is an integer number (4804442).

Almost surely, 2^28361523 is an apocalyptic number.

28361523 is a deficient number, since it is larger than the sum of its proper divisors (10074013).

28361523 is a wasteful number, since it uses less digits than its factorization.

28361523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155045.

The product of its digits is 8640, while the sum is 30.

The square root of 28361523 is about 5325.5537740220. The cubic root of 28361523 is about 304.9602133894.

The spelling of 28361523 in words is "twenty-eight million, three hundred sixty-one thousand, five hundred twenty-three".