156200020 has 12 divisors (see below), whose sum is σ = 328020084. Its totient is φ = 62480000.

The previous prime is 156200017. The next prime is 156200059. The reversal of 156200020 is 20002651.

It is a happy number.

156200020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 56280004 + 99920016 = 7502^2 + 9996^2 .

It is a junction number, because it is equal to n+sod(n) for n = 156199967 and 156200003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3904981 + ... + 3905020.

It is an arithmetic number, because the mean of its divisors is an integer number (27335007).

Almost surely, 2^156200020 is an apocalyptic number.

156200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156200020 is an abundant number, since it is smaller than the sum of its proper divisors (171820064).

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

156200020 is a wasteful number, since it uses less digits than its factorization.

156200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7810010 (or 7810008 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 156200020 is about 12498.0006401024. Note that the first 3 decimals coincide. The cubic root of 156200020 is about 538.5512377725.

Subtracting from 156200020 its sum of digits (16), we obtain a square (156200004 = 12498²).

Adding to 156200020 its reverse (20002651), we get a palindrome (176202671).

The spelling of 156200020 in words is "one hundred fifty-six million, two hundred thousand, twenty".