340902 has 32 divisors (see below), whose sum is σ = 777600. Its totient is φ = 110664.

The previous prime is 340897. The next prime is 340903. The reversal of 340902 is 209043.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340903) by changing a digit.

340902 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 15 ways as a sum of consecutive naturals, for example, 3133 + ... + 3239.

It is an arithmetic number, because the mean of its divisors is an integer number (24300).

2³⁴⁰⁹⁰² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388800).

340902 is an abundant number, since it is smaller than the sum of its proper divisors (436698).

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

340902 is a wasteful number, since it uses less digits than its factorization.

340902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 340902 is about 583.8681357978. The cubic root of 340902 is about 69.8569869286.

Adding to 340902 its reverse (209043), we get a palindrome (549945).

The spelling of 340902 in words is "three hundred forty thousand, nine hundred two".