28244892 has 48 divisors (see below), whose sum is σ = 71318912. Its totient is φ = 8648640.

The previous prime is 28244873. The next prime is 28244903. The reversal of 28244892 is 29844282.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28244892.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51363 + ... + 51909.

Almost surely, 2^28244892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28244892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35659456).

28244892 is an abundant number, since it is smaller than the sum of its proper divisors (43074020).

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

28244892 is a wasteful number, since it uses less digits than its factorization.

28244892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898 (or 896 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 28244892 is about 5314.5923644246. The cubic root of 28244892 is about 304.5416100880.

The spelling of 28244892 in words is "twenty-eight million, two hundred forty-four thousand, eight hundred ninety-two".