213947258 has 16 divisors (see below), whose sum is σ = 386070720. Its totient is φ = 86865696.

The previous prime is 213947233. The next prime is 213947263. The reversal of 213947258 is 852749312.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 401891 + ... + 402422.

It is an arithmetic number, because the mean of its divisors is an integer number (24129420).

Almost surely, 2^213947258 is an apocalyptic number.

213947258 is a deficient number, since it is larger than the sum of its proper divisors (172123462).

213947258 is a wasteful number, since it uses less digits than its factorization.

213947258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804341.

The product of its digits is 120960, while the sum is 41.

The square root of 213947258 is about 14626.9360427945. The cubic root of 213947258 is about 598.0932599524.

The spelling of 213947258 in words is "two hundred thirteen million, nine hundred forty-seven thousand, two hundred fifty-eight".