28140024 has 32 divisors (see below), whose sum is σ = 76746240. Its totient is φ = 8527200.

The previous prime is 28140023. The next prime is 28140029. The reversal of 28140024 is 42004182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28140023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53032 + ... + 53559.

It is an arithmetic number, because the mean of its divisors is an integer number (2398320).

Almost surely, 2^28140024 is an apocalyptic number.

28140024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28140024 is an abundant number, since it is smaller than the sum of its proper divisors (48606216).

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

28140024 is a wasteful number, since it uses less digits than its factorization.

28140024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106611 (or 106607 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 28140024 is about 5304.7171460880. The cubic root of 28140024 is about 304.1642406595.

The spelling of 28140024 in words is "twenty-eight million, one hundred forty thousand, twenty-four".