28043403206 has 32 divisors (see below), whose sum is σ = 51978786048. Its totient is φ = 11049876000.

The previous prime is 28043403197. The next prime is 28043403251. The reversal of 28043403206 is 60230434082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261260 + ... + 352623.

It is an arithmetic number, because the mean of its divisors is an integer number (1624337064).

Almost surely, 2^28043403206 is an apocalyptic number.

28043403206 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28043403206 is a deficient number, since it is larger than the sum of its proper divisors (23935382842).

28043403206 is a wasteful number, since it uses less digits than its factorization.

28043403206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614156.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 28043403206 its reverse (60230434082), we get a palindrome (88273837288).

The spelling of 28043403206 in words is "twenty-eight billion, forty-three million, four hundred three thousand, two hundred six".