213727730 has 16 divisors (see below), whose sum is σ = 401436864. Its totient is φ = 81774000.

The previous prime is 213727727. The next prime is 213727741. The reversal of 213727730 is 37727312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464396 + ... + 464855.

It is an arithmetic number, because the mean of its divisors is an integer number (25089804).

Almost surely, 2^213727730 is an apocalyptic number.

213727730 is a deficient number, since it is larger than the sum of its proper divisors (187709134).

213727730 is a wasteful number, since it uses less digits than its factorization.

213727730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929281.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 213727730 is about 14619.4298794447. The cubic root of 213727730 is about 597.8886251720. Note that the first 3 decimals are identical.

The spelling of 213727730 in words is "two hundred thirteen million, seven hundred twenty-seven thousand, seven hundred thirty".