28857838088734 has 4 divisors (see below), whose sum is σ = 43286757133104. Its totient is φ = 14428919044366.

The previous prime is 28857838088689. The next prime is 28857838088743. The reversal of 28857838088734 is 43788083875882.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7214459522182 + ... + 7214459522185.

It is an arithmetic number, because the mean of its divisors is an integer number (10821689283276).

Almost surely, 2^{28857838088734} is an apocalyptic number.

28857838088734 is a deficient number, since it is larger than the sum of its proper divisors (14428919044370).

28857838088734 is a wasteful number, since it uses less digits than its factorization.

28857838088734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14428919044369.

The product of its (nonzero) digits is 4624220160, while the sum is 79.

The spelling of 28857838088734 in words is "twenty-eight trillion, eight hundred fifty-seven billion, eight hundred thirty-eight million, eighty-eight thousand, seven hundred thirty-four".