28079460 has 60 divisors (see below), whose sum is σ = 88091388. Its totient is φ = 7487424.

The previous prime is 28079449. The next prime is 28079489. The reversal of 28079460 is 6497082.

It can be written as a sum of positive squares in 2 ways, for example, as 4981824 + 23097636 = 2232^2 + 4806^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7047 + ... + 10286.

Almost surely, 2^28079460 is an apocalyptic number.

28079460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28079460 is an abundant number, since it is smaller than the sum of its proper divisors (60011928).

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

28079460 is a wasteful number, since it uses less digits than its factorization.

28079460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17354 (or 17343 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 28079460 is about 5299.0055670852. The cubic root of 28079460 is about 303.9458727501.

The spelling of 28079460 in words is "twenty-eight million, seventy-nine thousand, four hundred sixty".