206215144 has 16 divisors (see below), whose sum is σ = 388127520. Its totient is φ = 102714480.

The previous prime is 206215133. The next prime is 206215147. The reversal of 206215144 is 441512602.

It is a happy number.

206215144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×206215144² = 85049371229881472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206215147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46902 + ... + 51109.

It is an arithmetic number, because the mean of its divisors is an integer number (24257970).

Almost surely, 2^206215144 is an apocalyptic number.

It is an amenable number.

206215144 is a deficient number, since it is larger than the sum of its proper divisors (181912376).

206215144 is a wasteful number, since it uses less digits than its factorization.

206215144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98280 (or 98276 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 206215144 is about 14360.1930349143. The cubic root of 206215144 is about 590.7995900120.

Adding to 206215144 its reverse (441512602), we get a palindrome (647727746).

The spelling of 206215144 in words is "two hundred six million, two hundred fifteen thousand, one hundred forty-four".