28534725 has 36 divisors (see below), whose sum is σ = 52770432. Its totient is φ = 14724000.

The previous prime is 28534691. The next prime is 28534747. The reversal of 28534725 is 52743582.

It is not a de Polignac number, because 28534725 - 2⁶ = 28534661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28534725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4930 + ... + 9020.

Almost surely, 2^28534725 is an apocalyptic number.

28534725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28534725 is a deficient number, since it is larger than the sum of its proper divisors (24235707).

28534725 is a wasteful number, since it uses less digits than its factorization.

28534725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4138 (or 4130 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 28534725 is about 5341.7904301835. The cubic root of 28534725 is about 305.5797447639.

The spelling of 28534725 in words is "twenty-eight million, five hundred thirty-four thousand, seven hundred twenty-five".