855315400 has 96 divisors (see below), whose sum is σ = 2138256000. Its totient is φ = 317157120.

The previous prime is 855315397. The next prime is 855315413. The reversal of 855315400 is 4513558.

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, 176206 + ... + 180994.

It is an arithmetic number, because the mean of its divisors is an integer number (22273500).

Almost surely, 2^855315400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855315400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069128000).

855315400 is an abundant number, since it is smaller than the sum of its proper divisors (1282940600).

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

855315400 is a wasteful number, since it uses less digits than its factorization.

855315400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4871 (or 4862 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 855315400 is about 29245.7757633474. The cubic root of 855315400 is about 949.2386883081.

Adding to 855315400 its reverse (4513558), we get a palindrome (859828958).

The spelling of 855315400 in words is "eight hundred fifty-five million, three hundred fifteen thousand, four hundred".