855800136 has 96 divisors (see below), whose sum is σ = 2400652800. Its totient is φ = 275132160.

The previous prime is 855800131. The next prime is 855800137. The reversal of 855800136 is 631008558.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 855800136.

It is not an unprimeable number, because it can be changed into a prime (855800131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1019605 + ... + 1020443.

It is an arithmetic number, because the mean of its divisors is an integer number (25006800).

Almost surely, 2^855800136 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 855800136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1200326400).

855800136 is an abundant number, since it is smaller than the sum of its proper divisors (1544852664).

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

855800136 is a wasteful number, since it uses less digits than its factorization.

855800136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339 (or 1332 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 855800136 is about 29254.0618718153. The cubic root of 855800136 is about 949.4179762715.

The spelling of 855800136 in words is "eight hundred fifty-five million, eight hundred thousand, one hundred thirty-six".