354730640 has 40 divisors (see below), whose sum is σ = 899728128. Its totient is φ = 128992640.

The previous prime is 354730637. The next prime is 354730657. The reversal of 354730640 is 46037453.

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 = 354730597 and 354730606.

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, 200672 + ... + 202431.

Almost surely, 2^354730640 is an apocalyptic number.

It is an amenable number.

354730640 is an abundant number, since it is smaller than the sum of its proper divisors (544997488).

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

354730640 is a wasteful number, since it uses less digits than its factorization.

354730640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403127 (or 403121 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 354730640 is about 18834.2942527720. The cubic root of 354730640 is about 707.8907446294.

The spelling of 354730640 in words is "three hundred fifty-four million, seven hundred thirty thousand, six hundred forty".