28745024 has 112 divisors (see below), whose sum is σ = 75102720. Its totient is φ = 10575360.

The previous prime is 28745023. The next prime is 28745047. The reversal of 28745024 is 42054782.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28745023) 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, 93479 + ... + 93785.

It is an arithmetic number, because the mean of its divisors is an integer number (670560).

Almost surely, 2^28745024 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 28745024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37551360).

28745024 is an abundant number, since it is smaller than the sum of its proper divisors (46357696).

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

28745024 is a wasteful number, since it uses less digits than its factorization.

28745024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 28745024 is about 5361.4386129098. The cubic root of 28745024 is about 306.3286087810.

The spelling of 28745024 in words is "twenty-eight million, seven hundred forty-five thousand, twenty-four".