28525703 has 4 divisors (see below), whose sum is σ = 28543680. Its totient is φ = 28507728.

The previous prime is 28525691. The next prime is 28525753. The reversal of 28525703 is 30752582.

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 28525703 - 2⁴ = 28525687 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 28525703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28525753) 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, 6350 + ... + 9867.

It is an arithmetic number, because the mean of its divisors is an integer number (7135920).

Almost surely, 2^28525703 is an apocalyptic number.

28525703 is a deficient number, since it is larger than the sum of its proper divisors (17977).

28525703 is a wasteful number, since it uses less digits than its factorization.

28525703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17976.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 28525703 is about 5340.9458900086. The cubic root of 28525703 is about 305.5475356916.

It can be divided in two parts, 2852 and 5703, that multiplied together give a triangular number (16264956 = T₅₇₀₃).

The spelling of 28525703 in words is "twenty-eight million, five hundred twenty-five thousand, seven hundred three".