28897796734 has 4 divisors (see below), whose sum is σ = 43346695104. Its totient is φ = 14448898366.

The previous prime is 28897796729. The next prime is 28897796743. The reversal of 28897796734 is 43769779882.

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, 7224449182 + ... + 7224449185.

It is an arithmetic number, because the mean of its divisors is an integer number (10836673776).

Almost surely, 2^28897796734 is an apocalyptic number.

28897796734 is a deficient number, since it is larger than the sum of its proper divisors (14448898370).

28897796734 is a wasteful number, since it uses less digits than its factorization.

28897796734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14448898369.

The product of its digits is 256048128, while the sum is 70.

The spelling of 28897796734 in words is "twenty-eight billion, eight hundred ninety-seven million, seven hundred ninety-six thousand, seven hundred thirty-four".