28336708642 has 16 divisors (see below), whose sum is σ = 48809642400. Its totient is φ = 12202410240.

The previous prime is 28336708619. The next prime is 28336708651. The reversal of 28336708642 is 24680763382.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33895167 + ... + 33896002.

It is an arithmetic number, because the mean of its divisors is an integer number (3050602650).

Almost surely, 2^28336708642 is an apocalyptic number.

28336708642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28336708642 is a deficient number, since it is larger than the sum of its proper divisors (20472933758).

28336708642 is a wasteful number, since it uses less digits than its factorization.

28336708642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67791201.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 28336708642 in words is "twenty-eight billion, three hundred thirty-six million, seven hundred eight thousand, six hundred forty-two".