234320040 has 96 divisors (see below), whose sum is σ = 789778080. Its totient is φ = 62482752.

The previous prime is 234320017. The next prime is 234320057. The reversal of 234320040 is 40023432.

It is a super-2 number, since 2×234320040² = 109811762291203200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 234319995 and 234320022.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2334 + ... + 21773.

It is an arithmetic number, because the mean of its divisors is an integer number (8226855).

Almost surely, 2^234320040 is an apocalyptic number.

234320040 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 234320040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394889040).

234320040 is an abundant number, since it is smaller than the sum of its proper divisors (555458040).

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

234320040 is a wasteful number, since it uses less digits than its factorization.

234320040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24133 (or 24117 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 234320040 is about 15307.5158010697. The cubic root of 234320040 is about 616.5048217429.

Adding to 234320040 its reverse (40023432), we get a palindrome (274343472).

The spelling of 234320040 in words is "two hundred thirty-four million, three hundred twenty thousand, forty".