156021330 has 16 divisors (see below), whose sum is σ = 374451264. Its totient is φ = 41605680.

The previous prime is 156021319. The next prime is 156021343. The reversal of 156021330 is 33120651.

It is a junction number, because it is equal to n+sod(n) for n = 156021297 and 156021306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600326 + ... + 2600385.

It is an arithmetic number, because the mean of its divisors is an integer number (23403204).

Almost surely, 2^156021330 is an apocalyptic number.

156021330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156021330 is an abundant number, since it is smaller than the sum of its proper divisors (218429934).

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

156021330 is a wasteful number, since it uses less digits than its factorization.

156021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200721.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 156021330 is about 12490.8498509909. The cubic root of 156021330 is about 538.3457951173.

Adding to 156021330 its reverse (33120651), we get a palindrome (189141981).

The spelling of 156021330 in words is "one hundred fifty-six million, twenty-one thousand, three hundred thirty".