229397760 has 108 divisors (see below), whose sum is σ = 793732212. Its totient is φ = 61169664.

The previous prime is 229397731. The next prime is 229397809. The reversal of 229397760 is 67793922.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34292736 + 195105024 = 5856^2 + 13968^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1564 + ... + 21476.

Almost surely, 2^229397760 is an apocalyptic number.

229397760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229397760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396866106).

229397760 is an abundant number, since it is smaller than the sum of its proper divisors (564334452).

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

229397760 is a wasteful number, since it uses less digits than its factorization.

229397760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19940 (or 19923 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 229397760 is about 15145.8826088148. The cubic root of 229397760 is about 612.1573349168.

The spelling of 229397760 in words is "two hundred twenty-nine million, three hundred ninety-seven thousand, seven hundred sixty".