343232640 has 192 divisors, whose sum is σ = 1229679360. Its totient is φ = 91487232.

The previous prime is 343232623. The next prime is 343232647. The reversal of 343232640 is 46232343.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×343232640² = 235617290322739200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (343232647) 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, 154417 + ... + 156623.

It is an arithmetic number, because the mean of its divisors is an integer number (6404580).

Almost surely, 2^343232640 is an apocalyptic number.

343232640 is a gapful number since it is divisible by the number (30) 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 343232640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614839680).

343232640 is an abundant number, since it is smaller than the sum of its proper divisors (886446720).

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

343232640 is an equidigital number, since it uses as much as digits as its factorization.

343232640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

The square root of 343232640 is about 18526.5388024855. The cubic root of 343232640 is about 700.1582227372.

Adding to 343232640 its reverse (46232343), we get a palindrome (389464983).

It can be divided in two parts, 34323 and 2640, that added together give a palindrome (36963).

The spelling of 343232640 in words is "three hundred forty-three million, two hundred thirty-two thousand, six hundred forty".