216190258 has 8 divisors (see below), whose sum is σ = 343361052. Its totient is φ = 101736576.

The previous prime is 216190231. The next prime is 216190267. The reversal of 216190258 is 852091612.

216190258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 207446409 + 8743849 = 14403^2 + 2957^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 6358537 = 216190258 / (2 + 1 + 6 + 1 + 9 + 0 + 2 + 5 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3179235 + ... + 3179302.

Almost surely, 2^216190258 is an apocalyptic number.

216190258 is a deficient number, since it is larger than the sum of its proper divisors (127170794).

216190258 is a wasteful number, since it uses less digits than its factorization.

216190258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358556.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 216190258 is about 14703.4097406010. The cubic root of 216190258 is about 600.1761131167.

The spelling of 216190258 in words is "two hundred sixteen million, one hundred ninety thousand, two hundred fifty-eight".