28431024 has 40 divisors (see below), whose sum is σ = 73656000. Its totient is φ = 9450048.

The previous prime is 28431019. The next prime is 28431031. The reversal of 28431024 is 42013482.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 28430985 and 28431003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23359 + ... + 24545.

It is an arithmetic number, because the mean of its divisors is an integer number (1841400).

Almost surely, 2^28431024 is an apocalyptic number.

28431024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28431024 is an abundant number, since it is smaller than the sum of its proper divisors (45224976).

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

28431024 is a wasteful number, since it uses less digits than its factorization.

28431024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697 (or 1691 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 28431024 is about 5332.0750182270. The cubic root of 28431024 is about 305.2091157519.

The spelling of 28431024 in words is "twenty-eight million, four hundred thirty-one thousand, twenty-four".