28386937966 has 8 divisors (see below), whose sum is σ = 42673582080. Its totient is φ = 14162410608.

The previous prime is 28386937949. The next prime is 28386938003. The reversal of 28386937966 is 66973968382.

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, 15528046 + ... + 15529873.

It is an arithmetic number, because the mean of its divisors is an integer number (5334197760).

Almost surely, 2^28386937966 is an apocalyptic number.

28386937966 is a deficient number, since it is larger than the sum of its proper divisors (14286644114).

28386937966 is a wasteful number, since it uses less digits than its factorization.

28386937966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31058378.

The product of its digits is 141087744, while the sum is 67.

The spelling of 28386937966 in words is "twenty-eight billion, three hundred eighty-six million, nine hundred thirty-seven thousand, nine hundred sixty-six".