308140 has 48 divisors (see below), whose sum is σ = 774144. Its totient is φ = 100800.

The previous prime is 308137. The next prime is 308141. The reversal of 308140 is 41803.

It is not an unprimeable number, because it can be changed into a prime (308141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4305 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (16128).

2³⁰⁸¹⁴⁰ 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 308140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387072).

308140 is an abundant number, since it is smaller than the sum of its proper divisors (466004).

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

308140 is a wasteful number, since it uses less digits than its factorization.

308140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 308140 is about 555.1035939354. The cubic root of 308140 is about 67.5433649100.

Adding to 308140 its reverse (41803), we get a palindrome (349943).

The spelling of 308140 in words is "three hundred eight thousand, one hundred forty".