28523268 has 36 divisors (see below), whose sum is σ = 72334080. Its totient is φ = 9476976.

The previous prime is 28523239. The next prime is 28523273. The reversal of 28523268 is 86232582.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11821 + ... + 14027.

It is an arithmetic number, because the mean of its divisors is an integer number (2009280).

Almost surely, 2^28523268 is an apocalyptic number.

It is an amenable number.

28523268 is an abundant number, since it is smaller than the sum of its proper divisors (43810812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28523268 is a wasteful number, since it uses less digits than its factorization.

28523268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576 (or 2571 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28523268 is about 5340.7179292676. The cubic root of 28523268 is about 305.5388414341.

The spelling of 28523268 in words is "twenty-eight million, five hundred twenty-three thousand, two hundred sixty-eight".