285214776 has 128 divisors (see below), whose sum is σ = 935884800. Its totient is φ = 70174080.

The previous prime is 285214747. The next prime is 285214777. The reversal of 285214776 is 677412582.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285214777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31051 + ... + 39173.

It is an arithmetic number, because the mean of its divisors is an integer number (7311600).

Almost surely, 2^285214776 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 285214776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (467942400).

285214776 is an abundant number, since it is smaller than the sum of its proper divisors (650670024).

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

285214776 is a wasteful number, since it uses less digits than its factorization.

285214776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8169 (or 8165 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 285214776 is about 16888.3029342797. The cubic root of 285214776 is about 658.2497058259.

The spelling of 285214776 in words is "two hundred eighty-five million, two hundred fourteen thousand, seven hundred seventy-six".