28725734 has 8 divisors (see below), whose sum is σ = 43312440. Its totient is φ = 14288256.

The previous prime is 28725721. The next prime is 28725737. The reversal of 28725734 is 43752782.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28725737) 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, 36824 + ... + 37595.

It is an arithmetic number, because the mean of its divisors is an integer number (5414055).

Almost surely, 2^28725734 is an apocalyptic number.

28725734 is a deficient number, since it is larger than the sum of its proper divisors (14586706).

28725734 is a wasteful number, since it uses less digits than its factorization.

28725734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74614.

The product of its digits is 94080, while the sum is 38.

The square root of 28725734 is about 5359.6393535386. The cubic root of 28725734 is about 306.2600705282.

The spelling of 28725734 in words is "twenty-eight million, seven hundred twenty-five thousand, seven hundred thirty-four".