234420340 has 144 divisors (see below), whose sum is σ = 639160704. Its totient is φ = 70156800.

The previous prime is 234420331. The next prime is 234420341. The reversal of 234420340 is 43024432.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234420341) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1295050 + ... + 1295230.

It is an arithmetic number, because the mean of its divisors is an integer number (4438616).

Almost surely, 2^234420340 is an apocalyptic number.

234420340 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 234420340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319580352).

234420340 is an abundant number, since it is smaller than the sum of its proper divisors (404740364).

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

234420340 is a wasteful number, since it uses less digits than its factorization.

234420340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 234420340 is about 15310.7916189856. The cubic root of 234420340 is about 616.5927735500.

Adding to 234420340 its reverse (43024432), we get a palindrome (277444772).

The spelling of 234420340 in words is "two hundred thirty-four million, four hundred twenty thousand, three hundred forty".