28742888746 has 48 divisors (see below), whose sum is σ = 51357892320. Its totient is φ = 11894117760.

The previous prime is 28742888701. The next prime is 28742888753. The reversal of 28742888746 is 64788824782.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1514665 + ... + 1533523.

It is an arithmetic number, because the mean of its divisors is an integer number (1069956090).

Almost surely, 2^28742888746 is an apocalyptic number.

28742888746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28742888746 is a deficient number, since it is larger than the sum of its proper divisors (22615003574).

28742888746 is a wasteful number, since it uses less digits than its factorization.

28742888746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19031 (or 18958 counting only the distinct ones).

The product of its digits is 77070336, while the sum is 64.

The spelling of 28742888746 in words is "twenty-eight billion, seven hundred forty-two million, eight hundred eighty-eight thousand, seven hundred forty-six".