343356780 has 96 divisors (see below), whose sum is σ = 1038643200. Its totient is φ = 84250368.

The previous prime is 343356773. The next prime is 343356787. The reversal of 343356780 is 87653343.

It is an interprime number because it is at equal distance from previous prime (343356773) and next prime (343356787).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (343356787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373161 + ... + 374079.

It is an arithmetic number, because the mean of its divisors is an integer number (10819200).

Almost surely, 2^343356780 is an apocalyptic number.

343356780 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 343356780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519321600).

343356780 is an abundant number, since it is smaller than the sum of its proper divisors (695286420).

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

343356780 is a wasteful number, since it uses less digits than its factorization.

343356780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423 (or 1421 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 343356780 is about 18529.8888285926. Note that the first 4 decimals coincide. The cubic root of 343356780 is about 700.2426233788.

The spelling of 343356780 in words is "three hundred forty-three million, three hundred fifty-six thousand, seven hundred eighty".