28871694 has 16 divisors (see below), whose sum is σ = 64159440. Its totient is φ = 9623880.

The previous prime is 28871683. The next prime is 28871737. The reversal of 28871694 is 49617882.

It is a congruent number.

It is an unprimeable number.

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, 267277 + ... + 267384.

It is an arithmetic number, because the mean of its divisors is an integer number (4009965).

Almost surely, 2^28871694 is an apocalyptic number.

28871694 is an abundant number, since it is smaller than the sum of its proper divisors (35287746).

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

28871694 is a wasteful number, since it uses less digits than its factorization.

28871694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534672 (or 534666 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 28871694 is about 5373.2386881656. The cubic root of 28871694 is about 306.7779130630. Note that the first 3 decimals are identical.

The spelling of 28871694 in words is "twenty-eight million, eight hundred seventy-one thousand, six hundred ninety-four".