28277157247 has 8 divisors (see below), whose sum is σ = 30059808912. Its totient is φ = 26507760000.

The previous prime is 28277157199. The next prime is 28277157263. The reversal of 28277157247 is 74275177282.

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

It is not a de Polignac number, because 28277157247 - 2¹¹ = 28277155199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28277157194 and 28277157203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28277157277) 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, 3309204 + ... + 3317737.

It is an arithmetic number, because the mean of its divisors is an integer number (3757476114).

Almost surely, 2^28277157247 is an apocalyptic number.

28277157247 is a deficient number, since it is larger than the sum of its proper divisors (1782651665).

28277157247 is a wasteful number, since it uses less digits than its factorization.

28277157247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627209.

The product of its digits is 3073280, while the sum is 52.

The spelling of 28277157247 in words is "twenty-eight billion, two hundred seventy-seven million, one hundred fifty-seven thousand, two hundred forty-seven".