28078576527 has 4 divisors (see below), whose sum is σ = 37438102040. Its totient is φ = 18719051016.

The previous prime is 28078576451. The next prime is 28078576567. The reversal of 28078576527 is 72567587082.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28078576527 - 2⁸ = 28078576271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28078576567) 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, 4679762752 + ... + 4679762757.

It is an arithmetic number, because the mean of its divisors is an integer number (9359525510).

Almost surely, 2^28078576527 is an apocalyptic number.

28078576527 is a deficient number, since it is larger than the sum of its proper divisors (9359525513).

28078576527 is an equidigital number, since it uses as much as digits as its factorization.

28078576527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9359525512.

The product of its (nonzero) digits is 13171200, while the sum is 57.

The spelling of 28078576527 in words is "twenty-eight billion, seventy-eight million, five hundred seventy-six thousand, five hundred twenty-seven".