855786400 has 72 divisors (see below), whose sum is σ = 2387659680. Its totient is φ = 293410560.

The previous prime is 855786331. The next prime is 855786413. The reversal of 855786400 is 4687558.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70810 + ... + 82009.

It is an arithmetic number, because the mean of its divisors is an integer number (33161940).

Almost surely, 2^855786400 is an apocalyptic number.

855786400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

855786400 is an abundant number, since it is smaller than the sum of its proper divisors (1531873280).

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

855786400 is a wasteful number, since it uses less digits than its factorization.

855786400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152846 (or 152833 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 855786400 is about 29253.8271000565. The cubic root of 855786400 is about 949.4128967073.

The spelling of 855786400 in words is "eight hundred fifty-five million, seven hundred eighty-six thousand, four hundred".