156340 has 12 divisors (see below), whose sum is σ = 328356. Its totient is φ = 62528.

The previous prime is 156329. The next prime is 156347. The reversal of 156340 is 43651.

156340 = 95² + 96² + ... + 109².

It can be written as a sum of positive squares in 2 ways, for example, as 17956 + 138384 = 134^2 + 372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156347) by changing a digit.

156340 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 3 ways as a sum of consecutive naturals, for example, 3889 + ... + 3928.

It is an arithmetic number, because the mean of its divisors is an integer number (27363).

2¹⁵⁶³⁴⁰ is an apocalyptic number.

156340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156340 is an abundant number, since it is smaller than the sum of its proper divisors (172016).

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

156340 is a wasteful number, since it uses less digits than its factorization.

156340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7826 (or 7824 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 156340 is about 395.3985331283. The cubic root of 156340 is about 53.8712065524.

Adding to 156340 its reverse (43651), we get a palindrome (199991).

It can be divided in two parts, 156 and 340, that added together give a triangular number (496 = T₃₁).

The spelling of 156340 in words is "one hundred fifty-six thousand, three hundred forty".