229697856 has 140 divisors (see below), whose sum is σ = 693359040. Its totient is φ = 75168000.

The previous prime is 229697837. The next prime is 229697857. The reversal of 229697856 is 658796922.

It is a super-2 number, since 2×229697856² = 105522210101993472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229697857) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 305481 + ... + 306231.

Almost surely, 2^229697856 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 229697856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346679520).

229697856 is an abundant number, since it is smaller than the sum of its proper divisors (463661184).

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

229697856 is an equidigital number, since it uses as much as digits as its factorization.

229697856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 815 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 229697856 is about 15155.7862217702. The cubic root of 229697856 is about 612.4241580951.

The spelling of 229697856 in words is "two hundred twenty-nine million, six hundred ninety-seven thousand, eight hundred fifty-six".