206234140 has 72 divisors (see below), whose sum is σ = 533478960. Its totient is φ = 66544128.

The previous prime is 206234129. The next prime is 206234179. The reversal of 206234140 is 41432602.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10471 + ... + 22849.

It is an arithmetic number, because the mean of its divisors is an integer number (7409430).

Almost surely, 2^206234140 is an apocalyptic number.

206234140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206234140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266739480).

206234140 is an abundant number, since it is smaller than the sum of its proper divisors (327244820).

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

206234140 is a wasteful number, since it uses less digits than its factorization.

206234140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12419 (or 12410 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 206234140 is about 14360.8544314048. The cubic root of 206234140 is about 590.8177304263.

Adding to 206234140 its reverse (41432602), we get a palindrome (247666742).

The spelling of 206234140 in words is "two hundred six million, two hundred thirty-four thousand, one hundred forty".