28149792841 has 3 divisors (see below), whose sum is σ = 28149960621. Its totient is φ = 28149625062.

The previous prime is 28149792829. The next prime is 28149792871. The reversal of 28149792841 is 14829794182.

The square root of 28149792841 is 167779.

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 28149792841 - 2⁵ = 28149792809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28149792821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 83890 + ... + 251668.

It is an arithmetic number, because the mean of its divisors is an integer number (9383320207).

Almost surely, 2^28149792841 is an apocalyptic number.

28149792841 is the 167779-th square number.

28149792841 is the 83890-th centered octagonal number.

It is an amenable number.

28149792841 is a deficient number, since it is larger than the sum of its proper divisors (167780).

28149792841 is an frugal number, since it uses more digits than its factorization.

28149792841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335558 (or 167779 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The spelling of 28149792841 in words is "twenty-eight billion, one hundred forty-nine million, seven hundred ninety-two thousand, eight hundred forty-one".