156683540 has 48 divisors (see below), whose sum is σ = 357548688. Its totient is φ = 57329664.

The previous prime is 156683539. The next prime is 156683551. The reversal of 156683540 is 45386651.

It can be written as a sum of positive squares in 8 ways, for example, as 7941124 + 148742416 = 2818^2 + 12196^2 .

It is a junction number, because it is equal to n+sod(n) for n = 156683494 and 156683503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26714 + ... + 32046.

It is an arithmetic number, because the mean of its divisors is an integer number (7448931).

Almost surely, 2^156683540 is an apocalyptic number.

156683540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156683540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178774344).

156683540 is an abundant number, since it is smaller than the sum of its proper divisors (200865148).

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

156683540 is a wasteful number, since it uses less digits than its factorization.

156683540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5468 (or 5466 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 156683540 is about 12517.3295874160. The cubic root of 156683540 is about 539.1063637457.

The spelling of 156683540 in words is "one hundred fifty-six million, six hundred eighty-three thousand, five hundred forty".