234721872 has 120 divisors (see below), whose sum is σ = 819024960. Its totient is φ = 60963840.

The previous prime is 234721871. The next prime is 234721889. The reversal of 234721872 is 278127432.

234721872 is a `hidden beast` number, since 2 + 3 + 472 + 187 + 2 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234721871) 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, 504 + ... + 21672.

It is an arithmetic number, because the mean of its divisors is an integer number (6825208).

Almost surely, 2^234721872 is an apocalyptic number.

234721872 is a gapful number since it is divisible by the number (22) 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 234721872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409512480).

234721872 is an abundant number, since it is smaller than the sum of its proper divisors (584303088).

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

234721872 is a wasteful number, since it uses less digits than its factorization.

234721872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21201 (or 21192 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 234721872 is about 15320.6354959577. The cubic root of 234721872 is about 616.8570321784.

The spelling of 234721872 in words is "two hundred thirty-four million, seven hundred twenty-one thousand, eight hundred seventy-two".