206402156 has 6 divisors (see below), whose sum is σ = 361203780. Its totient is φ = 103201076.

The previous prime is 206402153. The next prime is 206402177. The reversal of 206402156 is 651204602.

206402156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (206402153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25800266 + ... + 25800273.

It is an arithmetic number, because the mean of its divisors is an integer number (60200630).

Almost surely, 2^206402156 is an apocalyptic number.

It is an amenable number.

206402156 is a deficient number, since it is larger than the sum of its proper divisors (154801624).

206402156 is a wasteful number, since it uses less digits than its factorization.

206402156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51600543 (or 51600541 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 206402156 is about 14366.7030316632. The cubic root of 206402156 is about 590.9781304566.

Adding to 206402156 its reverse (651204602), we get a palindrome (857606758).

The spelling of 206402156 in words is "two hundred six million, four hundred two thousand, one hundred fifty-six".