28514712770 has 8 divisors (see below), whose sum is σ = 51326483004. Its totient is φ = 11405885104.

The previous prime is 28514712763. The next prime is 28514712773. The reversal of 28514712770 is 7721741582.

It is a happy number.

It is a Cunningham number, because it is equal to 168863²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 28514712769 + 1 = 168863^2 + 1^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28514712773) 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, 1425735629 + ... + 1425735648.

Almost surely, 2^28514712770 is an apocalyptic number.

28514712770 is a deficient number, since it is larger than the sum of its proper divisors (22811770234).

28514712770 is a wasteful number, since it uses less digits than its factorization.

28514712770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851471284.

The product of its (nonzero) digits is 219520, while the sum is 44.

The spelling of 28514712770 in words is "twenty-eight billion, five hundred fourteen million, seven hundred twelve thousand, seven hundred seventy".