346522640 has 40 divisors (see below), whose sum is σ = 807007128. Its totient is φ = 138378240.

The previous prime is 346522607. The next prime is 346522661. The reversal of 346522640 is 46225643.

It can be written as a sum of positive squares in 4 ways, for example, as 51782416 + 294740224 = 7196^2 + 17168^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 346522597 and 346522606.

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, 49604 + ... + 56156.

Almost surely, 2^346522640 is an apocalyptic number.

It is an amenable number.

346522640 is an abundant number, since it is smaller than the sum of its proper divisors (460484488).

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

346522640 is a wasteful number, since it uses less digits than its factorization.

346522640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7227 (or 7221 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 346522640 is about 18615.1185867832. The cubic root of 346522640 is about 702.3881966423.

The spelling of 346522640 in words is "three hundred forty-six million, five hundred twenty-two thousand, six hundred forty".