206270730 has 48 divisors (see below), whose sum is σ = 537156360. Its totient is φ = 54918144.

The previous prime is 206270711. The next prime is 206270737. The reversal of 206270730 is 37072602.

206270730 is a `hidden beast` number, since 2 + 0 + 627 + 0 + 7 + 30 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 188046369 + 18224361 = 13713^2 + 4269^2 .

It is a super-2 number, since 2×206270730² = 85095228109465800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 206270694 and 206270703.

It is not an unprimeable number, because it can be changed into a prime (206270737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71394 + ... + 74226.

Almost surely, 2^206270730 is an apocalyptic number.

206270730 is an abundant number, since it is smaller than the sum of its proper divisors (330885630).

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

206270730 is a wasteful number, since it uses less digits than its factorization.

206270730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655 (or 3652 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 206270730 is about 14362.1283241726. The cubic root of 206270730 is about 590.8526692623.

The spelling of 206270730 in words is "two hundred six million, two hundred seventy thousand, seven hundred thirty".