156390 has 32 divisors (see below), whose sum is σ = 405216. Its totient is φ = 38400.

The previous prime is 156371. The next prime is 156419. The reversal of 156390 is 93651.

156390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 156390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190 + ... + 590.

It is an arithmetic number, because the mean of its divisors is an integer number (12663).

2¹⁵⁶³⁹⁰ is an apocalyptic number.

156390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 156390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202608).

156390 is an abundant number, since it is smaller than the sum of its proper divisors (248826).

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

156390 is a wasteful number, since it uses less digits than its factorization.

156390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 156390 is about 395.4617554202. The cubic root of 156390 is about 53.8769488944.

It can be divided in two parts, 1563 and 90, that added together give a triangular number (1653 = T₅₇).

The spelling of 156390 in words is "one hundred fifty-six thousand, three hundred ninety".