28207981846 has 8 divisors (see below), whose sum is σ = 46158515784. Its totient is φ = 12821809920.

The previous prime is 28207981831. The next prime is 28207981853. The reversal of 28207981846 is 64818970282.

It is a happy number.

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

It is a congruent number.

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, 641090475 + ... + 641090518.

It is an arithmetic number, because the mean of its divisors is an integer number (5769814473).

Almost surely, 2^28207981846 is an apocalyptic number.

28207981846 is a deficient number, since it is larger than the sum of its proper divisors (17950533938).

28207981846 is a wasteful number, since it uses less digits than its factorization.

28207981846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282181006.

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 28207981846 in words is "twenty-eight billion, two hundred seven million, nine hundred eighty-one thousand, eight hundred forty-six".