28725450 has 48 divisors (see below), whose sum is σ = 76724256. Its totient is φ = 7070400.

The previous prime is 28725443. The next prime is 28725469. The reversal of 28725450 is 5452782.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5416 + ... + 9315.

It is an arithmetic number, because the mean of its divisors is an integer number (1598422).

Almost surely, 2^28725450 is an apocalyptic number.

28725450 is an abundant number, since it is smaller than the sum of its proper divisors (47998806).

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

28725450 is a wasteful number, since it uses less digits than its factorization.

28725450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14759 (or 14754 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 28725450 is about 5359.6128591532. The cubic root of 28725450 is about 306.2590612340.

The spelling of 28725450 in words is "twenty-eight million, seven hundred twenty-five thousand, four hundred fifty".