28894250 has 128 divisors (see below), whose sum is σ = 71884800. Its totient is φ = 8424000.

The previous prime is 28894249. The next prime is 28894267. The reversal of 28894250 is 5249882.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 365711 + ... + 365789.

It is an arithmetic number, because the mean of its divisors is an integer number (561600).

Almost surely, 2^28894250 is an apocalyptic number.

28894250 is an abundant number, since it is smaller than the sum of its proper divisors (42990550).

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

28894250 is a wasteful number, since it uses less digits than its factorization.

28894250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 28894250 is about 5375.3371987253. The cubic root of 28894250 is about 306.8577823102.

The spelling of 28894250 in words is "twenty-eight million, eight hundred ninety-four thousand, two hundred fifty".