343604640 has 48 divisors (see below), whose sum is σ = 1082356128. Its totient is φ = 91627776.

The previous prime is 343604627. The next prime is 343604669. The reversal of 343604640 is 46406343.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 343604598 and 343604607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357442 + ... + 358401.

It is an arithmetic number, because the mean of its divisors is an integer number (22549086).

Almost surely, 2^343604640 is an apocalyptic number.

343604640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

343604640 is an abundant number, since it is smaller than the sum of its proper divisors (738751488).

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

343604640 is a wasteful number, since it uses less digits than its factorization.

343604640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715861 (or 715853 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 343604640 is about 18536.5757355559. The cubic root of 343604640 is about 700.4110782730.

The spelling of 343604640 in words is "three hundred forty-three million, six hundred four thousand, six hundred forty".