855712380 has 24 divisors (see below), whose sum is σ = 2395994832. Its totient is φ = 228189952.

The previous prime is 855712379. The next prime is 855712381. The reversal of 855712380 is 83217558.

It is an interprime number because it is at equal distance from previous prime (855712379) and next prime (855712381).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855712381) 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, 7130877 + ... + 7130996.

It is an arithmetic number, because the mean of its divisors is an integer number (99833118).

Almost surely, 2^855712380 is an apocalyptic number.

It is an amenable number.

855712380 is an abundant number, since it is smaller than the sum of its proper divisors (1540282452).

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

855712380 is a wasteful number, since it uses less digits than its factorization.

855712380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14261885 (or 14261883 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 855712380 is about 29252.5619390849. The cubic root of 855712380 is about 949.3855232222.

The spelling of 855712380 in words is "eight hundred fifty-five million, seven hundred twelve thousand, three hundred eighty".