213582890 has 8 divisors (see below), whose sum is σ = 384449220. Its totient is φ = 85433152.

The previous prime is 213582881. The next prime is 213582893. The reversal of 213582890 is 98285312.

It can be written as a sum of positive squares in 2 ways, for example, as 194407249 + 19175641 = 13943^2 + 4379^2 .

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

It is not an unprimeable number, because it can be changed into a prime (213582893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10679135 + ... + 10679154.

Almost surely, 2^213582890 is an apocalyptic number.

213582890 is a deficient number, since it is larger than the sum of its proper divisors (170866330).

213582890 is a wasteful number, since it uses less digits than its factorization.

213582890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21358296.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 213582890 is about 14614.4753583562. The cubic root of 213582890 is about 597.7535346716.

The spelling of 213582890 in words is "two hundred thirteen million, five hundred eighty-two thousand, eight hundred ninety".