346402640 has 40 divisors (see below), whose sum is σ = 806921568. Its totient is φ = 138296960.

The previous prime is 346402603. The next prime is 346402673. The reversal of 346402640 is 46204643.

It is a happy number.

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

It is a congruent number.

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, 41195 + ... + 48885.

Almost surely, 2^346402640 is an apocalyptic number.

It is an amenable number.

346402640 is an abundant number, since it is smaller than the sum of its proper divisors (460518928).

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

346402640 is a wasteful number, since it uses less digits than its factorization.

346402640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8267 (or 8261 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 346402640 is about 18611.8951211315. The cubic root of 346402640 is about 702.3071088045.

The spelling of 346402640 in words is "three hundred forty-six million, four hundred two thousand, six hundred forty".