28133681026 has 32 divisors (see below), whose sum is σ = 49491025920. Its totient is φ = 11857208400.

The previous prime is 28133681011. The next prime is 28133681039. The reversal of 28133681026 is 62018633182.

It is a self number, because there is not a number n which added to its sum of digits gives 28133681026.

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, 696370 + ... + 735661.

It is an arithmetic number, because the mean of its divisors is an integer number (1546594560).

Almost surely, 2^28133681026 is an apocalyptic number.

28133681026 is a deficient number, since it is larger than the sum of its proper divisors (21357344894).

28133681026 is a wasteful number, since it uses less digits than its factorization.

28133681026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432110.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 28133681026 in words is "twenty-eight billion, one hundred thirty-three million, six hundred eighty-one thousand, twenty-six".