28478124 has 36 divisors (see below), whose sum is σ = 72195760. Its totient is φ = 9465120.

The previous prime is 28478113. The next prime is 28478129. The reversal of 28478124 is 42187482.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×28478124² = 1622007093118752, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (28478129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14217 + ... + 16095.

Almost surely, 2^28478124 is an apocalyptic number.

It is an amenable number.

28478124 is an abundant number, since it is smaller than the sum of its proper divisors (43717636).

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

28478124 is a wasteful number, since it uses less digits than its factorization.

28478124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310 (or 2305 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 28478124 is about 5336.4898575749. The cubic root of 28478124 is about 305.3775634118.

The spelling of 28478124 in words is "twenty-eight million, four hundred seventy-eight thousand, one hundred twenty-four".