156206020 has 12 divisors (see below), whose sum is σ = 328032684. Its totient is φ = 62482400.

The previous prime is 156206003. The next prime is 156206021. The reversal of 156206020 is 20602651.

It can be written as a sum of positive squares in 2 ways, for example, as 18096516 + 138109504 = 4254^2 + 11752^2 .

It is a junction number, because it is equal to n+sod(n) for n = 156205982 and 156206000.

It is not an unprimeable number, because it can be changed into a prime (156206021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3905131 + ... + 3905170.

It is an arithmetic number, because the mean of its divisors is an integer number (27336057).

Almost surely, 2^156206020 is an apocalyptic number.

156206020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156206020 is an abundant number, since it is smaller than the sum of its proper divisors (171826664).

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

156206020 is a wasteful number, since it uses less digits than its factorization.

156206020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7810310 (or 7810308 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 156206020 is about 12498.2406761912. The cubic root of 156206020 is about 538.5581333458.

Adding to 156206020 its reverse (20602651), we get a palindrome (176808671).

The spelling of 156206020 in words is "one hundred fifty-six million, two hundred six thousand, twenty".