28742171306 has 8 divisors (see below), whose sum is σ = 44987746464. Its totient is φ = 13746255820.

The previous prime is 28742171291. The next prime is 28742171323. The reversal of 28742171306 is 60317124782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×28742171306³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312414860 + ... + 312414951.

It is an arithmetic number, because the mean of its divisors is an integer number (5623468308).

Almost surely, 2^28742171306 is an apocalyptic number.

28742171306 is a deficient number, since it is larger than the sum of its proper divisors (16245575158).

28742171306 is a wasteful number, since it uses less digits than its factorization.

28742171306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624829836.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 28742171306 in words is "twenty-eight billion, seven hundred forty-two million, one hundred seventy-one thousand, three hundred six".