229158720 has 336 divisors, whose sum is σ = 936394368. Its totient is φ = 52254720.

The previous prime is 229158703. The next prime is 229158737. The reversal of 229158720 is 27851922.

It is an interprime number because it is at equal distance from previous prime (229158703) and next prime (229158737).

It is a tau number, because it is divible by the number of its divisors (336).

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 544110 + ... + 544530.

It is an arithmetic number, because the mean of its divisors is an integer number (2786888).

Almost surely, 2^229158720 is an apocalyptic number.

229158720 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 229158720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468197184).

229158720 is an abundant number, since it is smaller than the sum of its proper divisors (707235648).

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

229158720 is an equidigital number, since it uses as much as digits as its factorization.

229158720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 229158720 is about 15137.9892984504. The cubic root of 229158720 is about 611.9446316691.

The spelling of 229158720 in words is "two hundred twenty-nine million, one hundred fifty-eight thousand, seven hundred twenty".