156220134 has 48 divisors (see below), whose sum is σ = 367119216. Its totient is φ = 44184000.

The previous prime is 156220133. The next prime is 156220153. The reversal of 156220134 is 431022651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156220133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27064 + ... + 32324.

It is an arithmetic number, because the mean of its divisors is an integer number (7648317).

Almost surely, 2^156220134 is an apocalyptic number.

156220134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 156220134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183559608).

156220134 is an abundant number, since it is smaller than the sum of its proper divisors (210899082).

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

156220134 is a wasteful number, since it uses less digits than its factorization.

156220134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381 (or 5374 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 156220134 is about 12498.8053029080. The cubic root of 156220134 is about 538.5743533365.

Adding to 156220134 its reverse (431022651), we get a palindrome (587242785).

The spelling of 156220134 in words is "one hundred fifty-six million, two hundred twenty thousand, one hundred thirty-four".