229697280 has 216 divisors, whose sum is σ = 806088192. Its totient is φ = 60383232.

The previous prime is 229697257. The next prime is 229697287. The reversal of 229697280 is 82796922.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229697287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1462962 + ... + 1463118.

Almost surely, 2^229697280 is an apocalyptic number.

229697280 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 229697280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403044096).

229697280 is an abundant number, since it is smaller than the sum of its proper divisors (576390912).

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

229697280 is a wasteful number, since it uses less digits than its factorization.

229697280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 229697280 is about 15155.7672191150. The cubic root of 229697280 is about 612.4236461812.

The spelling of 229697280 in words is "two hundred twenty-nine million, six hundred ninety-seven thousand, two hundred eighty".