856749300 has 72 divisors (see below), whose sum is σ = 2704222752. Its totient is φ = 207696000.

The previous prime is 856749251. The next prime is 856749317. The reversal of 856749300 is 3947658.

It is a happy number.

856749300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126511 + ... + 133110.

Almost surely, 2^856749300 is an apocalyptic number.

It is an amenable number.

856749300 is an abundant number, since it is smaller than the sum of its proper divisors (1847473452).

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

856749300 is a wasteful number, since it uses less digits than its factorization.

856749300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259649 (or 259642 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 856749300 is about 29270.2801489839. The cubic root of 856749300 is about 949.7688449600.

The spelling of 856749300 in words is "eight hundred fifty-six million, seven hundred forty-nine thousand, three hundred".