343403740 has 72 divisors (see below), whose sum is σ = 789744816. Its totient is φ = 124992000.

The previous prime is 343403713. The next prime is 343403773. The reversal of 343403740 is 47304343.

It is a super-2 number, since 2×343403740² = 235852257291975200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 343403699 and 343403708.

It is a congruent number.

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, 326215 + ... + 327265.

It is an arithmetic number, because the mean of its divisors is an integer number (10968678).

Almost surely, 2^343403740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343403740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394872408).

343403740 is an abundant number, since it is smaller than the sum of its proper divisors (446341076).

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

343403740 is a wasteful number, since it uses less digits than its factorization.

343403740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 28.

The square root of 343403740 is about 18531.1559272486. The cubic root of 343403740 is about 700.2745453683.

The spelling of 343403740 in words is "three hundred forty-three million, four hundred three thousand, seven hundred forty".