28130946 has 16 divisors (see below), whose sum is σ = 56622144. Its totient is φ = 9316944.

The previous prime is 28130929. The next prime is 28130951. The reversal of 28130946 is 64903182.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 13990 + ... + 15873.

It is an arithmetic number, because the mean of its divisors is an integer number (3538884).

Almost surely, 2^28130946 is an apocalyptic number.

28130946 is an abundant number, since it is smaller than the sum of its proper divisors (28491198).

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

28130946 is a wasteful number, since it uses less digits than its factorization.

28130946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30025.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 28130946 is about 5303.8614235291. The cubic root of 28130946 is about 304.1315292452.

The spelling of 28130946 in words is "twenty-eight million, one hundred thirty thousand, nine hundred forty-six".