156243330 has 80 divisors (see below), whose sum is σ = 426539520. Its totient is φ = 41028768.

The previous prime is 156243323. The next prime is 156243331. The reversal of 156243330 is 33342651.

It is a happy number.

156243330 is a `hidden beast` number, since 1 + 5 + 624 + 3 + 3 + 30 = 666.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 156243294 and 156243303.

It is not an unprimeable number, because it can be changed into a prime (156243331) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 52831 + ... + 55709.

It is an arithmetic number, because the mean of its divisors is an integer number (5331744).

Almost surely, 2^156243330 is an apocalyptic number.

156243330 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 156243330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213269760).

156243330 is an abundant number, since it is smaller than the sum of its proper divisors (270296190).

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

156243330 is a wasteful number, since it uses less digits than its factorization.

156243330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965 (or 2956 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 156243330 is about 12499.7331971526. The cubic root of 156243330 is about 538.6010083566.

Adding to 156243330 its reverse (33342651), we get a palindrome (189585981).

The spelling of 156243330 in words is "one hundred fifty-six million, two hundred forty-three thousand, three hundred thirty".