156438 has 16 divisors (see below), whose sum is σ = 347760. Its totient is φ = 52128.

The previous prime is 156437. The next prime is 156467. The reversal of 156438 is 834651.

156438 is a `hidden beast` number, since 15 + 643 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1395 + ... + 1502.

It is an arithmetic number, because the mean of its divisors is an integer number (21735).

2¹⁵⁶⁴³⁸ is an apocalyptic number.

156438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

156438 is an abundant number, since it is smaller than the sum of its proper divisors (191322).

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

156438 is a wasteful number, since it uses less digits than its factorization.

156438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908 (or 2902 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 156438 is about 395.5224393129. The cubic root of 156438 is about 53.8824603913.

It can be divided in two parts, 15643 and 8, that added together give a palindrome (15651).

The spelling of 156438 in words is "one hundred fifty-six thousand, four hundred thirty-eight".