28677236201 has 4 divisors (see below), whose sum is σ = 28677638400. Its totient is φ = 28676834004.

The previous prime is 28677236191. The next prime is 28677236213. The reversal of 28677236201 is 10263277682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28677236201 - 2²² = 28673041897 is a prime.

It is a super-2 number, since 2×28677236201² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28677236281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62141 + ... + 247418.

It is an arithmetic number, because the mean of its divisors is an integer number (7169409600).

Almost surely, 2^28677236201 is an apocalyptic number.

It is an amenable number.

28677236201 is a deficient number, since it is larger than the sum of its proper divisors (402199).

28677236201 is an equidigital number, since it uses as much as digits as its factorization.

28677236201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402198.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 28677236201 in words is "twenty-eight billion, six hundred seventy-seven million, two hundred thirty-six thousand, two hundred one".