862778112 has 216 divisors, whose sum is σ = 2727906048. Its totient is φ = 237127680.

The previous prime is 862778053. The next prime is 862778123. The reversal of 862778112 is 211877268.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

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, 5166253 + ... + 5166419.

Almost surely, 2^862778112 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 862778112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363953024).

862778112 is an abundant number, since it is smaller than the sum of its proper divisors (1865127936).

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

862778112 is a wasteful number, since it uses less digits than its factorization.

862778112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 210 counting only the distinct ones).

The product of its digits is 75264, while the sum is 42.

The square root of 862778112 is about 29373.0848226740. The cubic root of 862778112 is about 951.9914317897.

The spelling of 862778112 in words is "eight hundred sixty-two million, seven hundred seventy-eight thousand, one hundred twelve".