352840 has 16 divisors (see below), whose sum is σ = 793980. Its totient is φ = 141120.

The previous prime is 352837. The next prime is 352841. The reversal of 352840 is 48253.

352840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 352836 + 4 = 594^2 + 2^2 .

It is not an unprimeable number, because it can be changed into a prime (352841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4371 + ... + 4450.

2³⁵²⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

352840 is an abundant number, since it is smaller than the sum of its proper divisors (441140).

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

352840 is a wasteful number, since it uses less digits than its factorization.

352840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8832 (or 8828 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 352840 is about 594.0033669938. The cubic root of 352840 is about 70.6630867219.

The spelling of 352840 in words is "three hundred fifty-two thousand, eight hundred forty".