28291669241 has 8 divisors (see below), whose sum is σ = 30885254400. Its totient is φ = 25701686640.

The previous prime is 28291669213. The next prime is 28291669243. The reversal of 28291669241 is 14296619282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28291669241 - 2⁶ = 28291669177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28291669241.

It is not an unprimeable number, because it can be changed into a prime (28291669243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884201 + ... + 915638.

It is an arithmetic number, because the mean of its divisors is an integer number (3860656800).

Almost surely, 2^28291669241 is an apocalyptic number.

It is an amenable number.

28291669241 is a deficient number, since it is larger than the sum of its proper divisors (2593585159).

28291669241 is a wasteful number, since it uses less digits than its factorization.

28291669241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801279.

The product of its digits is 746496, while the sum is 50.

The spelling of 28291669241 in words is "twenty-eight billion, two hundred ninety-one million, six hundred sixty-nine thousand, two hundred forty-one".