28758024 has 64 divisors (see below), whose sum is σ = 82656000. Its totient is φ = 9253440.

The previous prime is 28758011. The next prime is 28758029. The reversal of 28758024 is 42085782.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28758024.

It is not an unprimeable number, because it can be changed into a prime (28758029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3969 + ... + 8559.

It is an arithmetic number, because the mean of its divisors is an integer number (1291500).

Almost surely, 2^28758024 is an apocalyptic number.

28758024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28758024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41328000).

28758024 is an abundant number, since it is smaller than the sum of its proper divisors (53897976).

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

28758024 is a wasteful number, since it uses less digits than its factorization.

28758024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4635 (or 4625 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 28758024 is about 5362.6508370395. The cubic root of 28758024 is about 306.3747810824.

It can be divided in two parts, 287 and 58024, that added together give a triangular number (58311 = T₃₄₁).

The spelling of 28758024 in words is "twenty-eight million, seven hundred fifty-eight thousand, twenty-four".