229111680 has 128 divisors (see below), whose sum is σ = 834670080. Its totient is φ = 52365312.

The previous prime is 229111639. The next prime is 229111693. The reversal of 229111680 is 86111922.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4917 + ... + 21963.

It is an arithmetic number, because the mean of its divisors is an integer number (6520860).

Almost surely, 2^229111680 is an apocalyptic number.

229111680 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 229111680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417335040).

229111680 is an abundant number, since it is smaller than the sum of its proper divisors (605558400).

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

229111680 is a wasteful number, since it uses less digits than its factorization.

229111680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17076 (or 17064 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 229111680 is about 15136.4355117049. The cubic root of 229111680 is about 611.9027569875.

The spelling of 229111680 in words is "two hundred twenty-nine million, one hundred eleven thousand, six hundred eighty".