28248894 has 24 divisors (see below), whose sum is σ = 62362872. Its totient is φ = 9238320.

The previous prime is 28248887. The next prime is 28248907. The reversal of 28248894 is 49884282.

It is a happy number.

28248894 is a `hidden beast` number, since 2 + 82 + 488 + 94 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13852 + ... + 15759.

It is an arithmetic number, because the mean of its divisors is an integer number (2598453).

Almost surely, 2^28248894 is an apocalyptic number.

28248894 is an abundant number, since it is smaller than the sum of its proper divisors (34113978).

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

28248894 is a wasteful number, since it uses less digits than its factorization.

28248894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29672 (or 29669 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 28248894 is about 5314.9688616209. The cubic root of 28248894 is about 304.5559928416. Note that the first 3 decimals are identical.

The spelling of 28248894 in words is "twenty-eight million, two hundred forty-eight thousand, eight hundred ninety-four".