28424084 has 12 divisors (see below), whose sum is σ = 53568564. Its totient is φ = 13118784.

The previous prime is 28424041. The next prime is 28424107. The reversal of 28424084 is 48042482.

It can be written as a sum of positive squares in 2 ways, for example, as 6615184 + 21808900 = 2572^2 + 4670^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28424084.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273257 + ... + 273360.

It is an arithmetic number, because the mean of its divisors is an integer number (4464047).

Almost surely, 2^28424084 is an apocalyptic number.

It is an amenable number.

28424084 is a deficient number, since it is larger than the sum of its proper divisors (25144480).

28424084 is a wasteful number, since it uses less digits than its factorization.

28424084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546634 (or 546632 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 28424084 is about 5331.4241999676. The cubic root of 28424084 is about 305.1842799290.

The spelling of 28424084 in words is "twenty-eight million, four hundred twenty-four thousand, eighty-four".