229780782 has 96 divisors (see below), whose sum is σ = 624648960. Its totient is φ = 59304960.

The previous prime is 229780763. The next prime is 229780783. The reversal of 229780782 is 287087922.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229780783) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 267069 + ... + 267927.

It is an arithmetic number, because the mean of its divisors is an integer number (6506760).

Almost surely, 2^229780782 is an apocalyptic number.

229780782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 229780782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312324480).

229780782 is an abundant number, since it is smaller than the sum of its proper divisors (394868178).

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

229780782 is a wasteful number, since it uses less digits than its factorization.

229780782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 229780782 is about 15158.5217617022. The cubic root of 229780782 is about 612.4978487777.

The spelling of 229780782 in words is "two hundred twenty-nine million, seven hundred eighty thousand, seven hundred eighty-two".