856735002 has 16 divisors (see below), whose sum is σ = 1903855680. Its totient is φ = 285578316.

The previous prime is 856734973. The next prime is 856735007. The reversal of 856735002 is 200537658.

856735002 is a `hidden beast` number, since 85 + 6 + 73 + 500 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (856735007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7932678 + ... + 7932785.

It is an arithmetic number, because the mean of its divisors is an integer number (118990980).

Almost surely, 2^856735002 is an apocalyptic number.

856735002 is an abundant number, since it is smaller than the sum of its proper divisors (1047120678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856735002 is a wasteful number, since it uses less digits than its factorization.

856735002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15865474 (or 15865468 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 856735002 is about 29270.0359070501. The cubic root of 856735002 is about 949.7635614734.

The spelling of 856735002 in words is "eight hundred fifty-six million, seven hundred thirty-five thousand, two".