28725294 has 16 divisors (see below), whose sum is σ = 61870032. Its totient is φ = 8838528.

The previous prime is 28725293. The next prime is 28725331. The reversal of 28725294 is 49252782.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28725293) 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, 184059 + ... + 184214.

It is an arithmetic number, because the mean of its divisors is an integer number (3866877).

Almost surely, 2^28725294 is an apocalyptic number.

28725294 is an abundant number, since it is smaller than the sum of its proper divisors (33144738).

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

28725294 is a wasteful number, since it uses less digits than its factorization.

28725294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368291.

The product of its digits is 80640, while the sum is 39.

The square root of 28725294 is about 5359.5983058435. The cubic root of 28725294 is about 306.2585068302.

The spelling of 28725294 in words is "twenty-eight million, seven hundred twenty-five thousand, two hundred ninety-four".