206730387320 has 32 divisors (see below), whose sum is σ = 466476192000. Its totient is φ = 82455209088.

The previous prime is 206730387277. The next prime is 206730387343. The reversal of 206730387320 is 23783037602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7390424 + ... + 7418343.

It is an arithmetic number, because the mean of its divisors is an integer number (14577381000).

Almost surely, 2^206730387320 is an apocalyptic number.

206730387320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206730387320 is an abundant number, since it is smaller than the sum of its proper divisors (259745804680).

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

206730387320 is a wasteful number, since it uses less digits than its factorization.

206730387320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14809127 (or 14809123 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 41.

The spelling of 206730387320 in words is "two hundred six billion, seven hundred thirty million, three hundred eighty-seven thousand, three hundred twenty".