229077720 has 160 divisors (see below), whose sum is σ = 815443200. Its totient is φ = 57480192.

The previous prime is 229077659. The next prime is 229077733. The reversal of 229077720 is 27770922.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53001 + ... + 57159.

It is an arithmetic number, because the mean of its divisors is an integer number (5096520).

Almost surely, 2^229077720 is an apocalyptic number.

229077720 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 229077720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407721600).

229077720 is an abundant number, since it is smaller than the sum of its proper divisors (586365480).

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

229077720 is a wasteful number, since it uses less digits than its factorization.

229077720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199 (or 4186 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 229077720 is about 15135.3136736574. The cubic root of 229077720 is about 611.8725224683.

The spelling of 229077720 in words is "two hundred twenty-nine million, seventy-seven thousand, seven hundred twenty".