28871046 has 16 divisors (see below), whose sum is σ = 64158000. Its totient is φ = 9623664.

The previous prime is 28871041. The next prime is 28871057. The reversal of 28871046 is 64017882.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28871046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28871041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267271 + ... + 267378.

It is an arithmetic number, because the mean of its divisors is an integer number (4009875).

Almost surely, 2^28871046 is an apocalyptic number.

28871046 is an abundant number, since it is smaller than the sum of its proper divisors (35286954).

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

28871046 is a wasteful number, since it uses less digits than its factorization.

28871046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534660 (or 534654 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 28871046 is about 5373.1783889985. The cubic root of 28871046 is about 306.7756179249.

The spelling of 28871046 in words is "twenty-eight million, eight hundred seventy-one thousand, forty-six".