234447840 has 432 divisors, whose sum is σ = 943605936. Its totient is φ = 52531200.

The previous prime is 234447781. The next prime is 234447841. The reversal of 234447840 is 48744432.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 234447795 and 234447804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234447841) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5718220 + ... + 5718260.

It is an arithmetic number, because the mean of its divisors is an integer number (2184273).

Almost surely, 2^234447840 is an apocalyptic number.

234447840 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 234447840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471802968).

234447840 is an abundant number, since it is smaller than the sum of its proper divisors (709158096).

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

234447840 is a wasteful number, since it uses less digits than its factorization.

234447840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 36.

The square root of 234447840 is about 15311.6896520273. The cubic root of 234447840 is about 616.6168835714.

The spelling of 234447840 in words is "two hundred thirty-four million, four hundred forty-seven thousand, eight hundred forty".