28714647349 has 4 divisors (see below), whose sum is σ = 28718180064. Its totient is φ = 28711114636.

The previous prime is 28714647341. The next prime is 28714647361. The reversal of 28714647349 is 94374641782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28714647349 - 2³ = 28714647341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28714647349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28714647341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1754137 + ... + 1770430.

It is an arithmetic number, because the mean of its divisors is an integer number (7179545016).

Almost surely, 2^28714647349 is an apocalyptic number.

It is an amenable number.

28714647349 is a deficient number, since it is larger than the sum of its proper divisors (3532715).

28714647349 is an equidigital number, since it uses as much as digits as its factorization.

28714647349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532714.

The product of its digits is 8128512, while the sum is 55.

The spelling of 28714647349 in words is "twenty-eight billion, seven hundred fourteen million, six hundred forty-seven thousand, three hundred forty-nine".