28212859994 has 16 divisors (see below), whose sum is σ = 46241102880. Its totient is φ = 12803303760.

The previous prime is 28212859993. The next prime is 28212860033. The reversal of 28212859994 is 49995821282.

It is not an unprimeable number, because it can be changed into a prime (28212859993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022249 + ... + 1049484.

It is an arithmetic number, because the mean of its divisors is an integer number (2890068930).

Almost surely, 2^28212859994 is an apocalyptic number.

28212859994 is a deficient number, since it is larger than the sum of its proper divisors (18028242886).

28212859994 is a wasteful number, since it uses less digits than its factorization.

28212859994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072365.

The product of its digits is 7464960, while the sum is 59.

The spelling of 28212859994 in words is "twenty-eight billion, two hundred twelve million, eight hundred fifty-nine thousand, nine hundred ninety-four".