28986244 has 48 divisors (see below), whose sum is σ = 60860800. Its totient is φ = 12065760.

The previous prime is 28986227. The next prime is 28986253. The reversal of 28986244 is 44268982.

It is a self number, because there is not a number n which added to its sum of digits gives 28986244.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50479 + ... + 51049.

Almost surely, 2^28986244 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 28986244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30430400).

28986244 is an abundant number, since it is smaller than the sum of its proper divisors (31874556).

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

28986244 is a wasteful number, since it uses less digits than its factorization.

28986244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 617 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 28986244 is about 5383.8874431028. The cubic root of 28986244 is about 307.1830969658.

The spelling of 28986244 in words is "twenty-eight million, nine hundred eighty-six thousand, two hundred forty-four".