28983874311 has 144 divisors (see below), whose sum is σ = 54547084800. Its totient is φ = 14694898176.

The previous prime is 28983874307. The next prime is 28983874333. The reversal of 28983874311 is 11347838982.

It is a happy number.

It is not a de Polignac number, because 28983874311 - 2² = 28983874307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28983874391) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 40311010 + ... + 40311728.

It is an arithmetic number, because the mean of its divisors is an integer number (378799200).

Almost surely, 2^28983874311 is an apocalyptic number.

28983874311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28983874311 is a deficient number, since it is larger than the sum of its proper divisors (25563210489).

28983874311 is a wasteful number, since it uses less digits than its factorization.

28983874311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058 (or 1048 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The spelling of 28983874311 in words is "twenty-eight billion, nine hundred eighty-three million, eight hundred seventy-four thousand, three hundred eleven".