28875291157 has 8 divisors (see below), whose sum is σ = 29575022400. Its totient is φ = 28176842400.

The previous prime is 28875291139. The next prime is 28875291223. The reversal of 28875291157 is 75119257882.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28875291157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28875291098 and 28875291107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28875291127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274969 + ... + 365182.

It is an arithmetic number, because the mean of its divisors is an integer number (3696877800).

Almost surely, 2^28875291157 is an apocalyptic number.

It is an amenable number.

28875291157 is a deficient number, since it is larger than the sum of its proper divisors (699731243).

28875291157 is a wasteful number, since it uses less digits than its factorization.

28875291157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641243.

The product of its digits is 2822400, while the sum is 55.

The spelling of 28875291157 in words is "twenty-eight billion, eight hundred seventy-five million, two hundred ninety-one thousand, one hundred fifty-seven".