28999001211 has 24 divisors (see below), whose sum is σ = 40976020800. Its totient is φ = 18231861984.

The previous prime is 28999001179. The next prime is 28999001219. The reversal of 28999001211 is 11210099982.

It is not a de Polignac number, because 28999001211 - 2⁵ = 28999001179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28999001219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25161 + ... + 242138.

It is an arithmetic number, because the mean of its divisors is an integer number (1707334200).

Almost surely, 2^28999001211 is an apocalyptic number.

28999001211 is a deficient number, since it is larger than the sum of its proper divisors (11977019589).

28999001211 is a wasteful number, since it uses less digits than its factorization.

28999001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267403 (or 267374 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 42.

The spelling of 28999001211 in words is "twenty-eight billion, nine hundred ninety-nine million, one thousand, two hundred eleven".