28933669801 has 3 divisors (see below), whose sum is σ = 28933839901. Its totient is φ = 28933499702.

The previous prime is 28933669781. The next prime is 28933669823. The reversal of 28933669801 is 10896633982.

The square root of 28933669801 is 170099.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 28933669801 - 2⁵ = 28933669769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28933669841) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 85050 + ... + 255148.

Almost surely, 2^28933669801 is an apocalyptic number.

28933669801 is the 170099-th square number.

28933669801 is the 85050-th centered octagonal number.

It is an amenable number.

28933669801 is a deficient number, since it is larger than the sum of its proper divisors (170100).

28933669801 is an frugal number, since it uses more digits than its factorization.

28933669801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340198 (or 170099 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 28933669801 in words is "twenty-eight billion, nine hundred thirty-three million, six hundred sixty-nine thousand, eight hundred one".