28691675942 has 4 divisors (see below), whose sum is σ = 43037513916. Its totient is φ = 14345837970.

The previous prime is 28691675939. The next prime is 28691675951. The reversal of 28691675942 is 24957619682.

It is a happy number.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7172918984 + ... + 7172918987.

It is an arithmetic number, because the mean of its divisors is an integer number (10759378479).

Almost surely, 2^28691675942 is an apocalyptic number.

28691675942 is a deficient number, since it is larger than the sum of its proper divisors (14345837974).

28691675942 is a wasteful number, since it uses less digits than its factorization.

28691675942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14345837973.

The product of its digits is 13063680, while the sum is 59.

The spelling of 28691675942 in words is "twenty-eight billion, six hundred ninety-one million, six hundred seventy-five thousand, nine hundred forty-two".