234721740 has 96 divisors (see below), whose sum is σ = 727211520. Its totient is φ = 56089600.

The previous prime is 234721733. The next prime is 234721769. The reversal of 234721740 is 47127432.

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

It is a junction number, because it is equal to n+sod(n) for n = 234721698 and 234721707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44356 + ... + 49364.

It is an arithmetic number, because the mean of its divisors is an integer number (7575120).

Almost surely, 2^234721740 is an apocalyptic number.

234721740 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 234721740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363605760).

234721740 is an abundant number, since it is smaller than the sum of its proper divisors (492489780).

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

234721740 is a wasteful number, since it uses less digits than its factorization.

234721740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5103 (or 5101 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 234721740 is about 15320.6311880418. The cubic root of 234721740 is about 616.8569165449.

The spelling of 234721740 in words is "two hundred thirty-four million, seven hundred twenty-one thousand, seven hundred forty".