349032520 has 16 divisors (see below), whose sum is σ = 785323260. Its totient is φ = 139612992.

The previous prime is 349032499. The next prime is 349032529. The reversal of 349032520 is 25230943.

It can be written as a sum of positive squares in 2 ways, for example, as 348867684 + 164836 = 18678^2 + 406^2 .

It is not an unprimeable number, because it can be changed into a prime (349032529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4362867 + ... + 4362946.

Almost surely, 2^349032520 is an apocalyptic number.

It is an amenable number.

349032520 is an abundant number, since it is smaller than the sum of its proper divisors (436290740).

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

349032520 is a wasteful number, since it uses less digits than its factorization.

349032520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8725824 (or 8725820 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 349032520 is about 18682.4120498398. The cubic root of 349032520 is about 704.0799291566.

The spelling of 349032520 in words is "three hundred forty-nine million, thirty-two thousand, five hundred twenty".