206130540 has 96 divisors (see below), whose sum is σ = 719599104. Its totient is φ = 42831360.

The previous prime is 206130527. The next prime is 206130557. The reversal of 206130540 is 45031602.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 17689 + ... + 26928.

It is an arithmetic number, because the mean of its divisors is an integer number (7495824).

Almost surely, 2^206130540 is an apocalyptic number.

206130540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206130540 is an abundant number, since it is smaller than the sum of its proper divisors (513468564).

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

206130540 is a wasteful number, since it uses less digits than its factorization.

206130540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44647 (or 44645 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 206130540 is about 14357.2469505821. The cubic root of 206130540 is about 590.7187830697.

The spelling of 206130540 in words is "two hundred six million, one hundred thirty thousand, five hundred forty".