28124624 has 20 divisors (see below), whose sum is σ = 59445600. Its totient is φ = 12783840.

The previous prime is 28124587. The next prime is 28124627. The reversal of 28124624 is 42642182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28124627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79724 + ... + 80075.

It is an arithmetic number, because the mean of its divisors is an integer number (2972280).

Almost surely, 2^28124624 is an apocalyptic number.

It is an amenable number.

28124624 is an abundant number, since it is smaller than the sum of its proper divisors (31320976).

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

28124624 is a wasteful number, since it uses less digits than its factorization.

28124624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159818 (or 159812 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

The square root of 28124624 is about 5303.2654091607. The cubic root of 28124624 is about 304.1087445679.

The spelling of 28124624 in words is "twenty-eight million, one hundred twenty-four thousand, six hundred twenty-four".