350840 has 48 divisors (see below), whose sum is σ = 923400. Its totient is φ = 119616.

The previous prime is 350809. The next prime is 350843. The reversal of 350840 is 48053.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350843) by changing a digit.

350840 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1871 + ... + 2049.

2³⁵⁰⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 350840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461700).

350840 is an abundant number, since it is smaller than the sum of its proper divisors (572560).

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

350840 is a wasteful number, since it uses less digits than its factorization.

350840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 350840 is about 592.3174824366. The cubic root of 350840 is about 70.5293206678.

Adding to 350840 its reverse (48053), we get a palindrome (398893).

The spelling of 350840 in words is "three hundred fifty thousand, eight hundred forty".