28475394 has 16 divisors (see below), whose sum is σ = 57020160. Its totient is φ = 9480240.

The previous prime is 28475393. The next prime is 28475399. The reversal of 28475394 is 49357482.

It is not an unprimeable number, because it can be changed into a prime (28475393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3552 + ... + 8340.

It is an arithmetic number, because the mean of its divisors is an integer number (3563760).

Almost surely, 2^28475394 is an apocalyptic number.

28475394 is an abundant number, since it is smaller than the sum of its proper divisors (28544766).

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

28475394 is a wasteful number, since it uses less digits than its factorization.

28475394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5785.

The product of its digits is 241920, while the sum is 42.

The square root of 28475394 is about 5336.2340653311. The cubic root of 28475394 is about 305.3678049578.

The spelling of 28475394 in words is "twenty-eight million, four hundred seventy-five thousand, three hundred ninety-four".