213085578 has 16 divisors (see below), whose sum is σ = 430155360. Its totient is φ = 70364496.

The previous prime is 213085573. The next prime is 213085603. The reversal of 213085578 is 875580312.

It is not an unprimeable number, because it can be changed into a prime (213085573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165313 + ... + 166596.

It is an arithmetic number, because the mean of its divisors is an integer number (26884710).

Almost surely, 2^213085578 is an apocalyptic number.

213085578 is an abundant number, since it is smaller than the sum of its proper divisors (217069782).

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

213085578 is a wasteful number, since it uses less digits than its factorization.

213085578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332021.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 213085578 is about 14597.4510788699. The cubic root of 213085578 is about 597.2892324539.

The spelling of 213085578 in words is "two hundred thirteen million, eighty-five thousand, five hundred seventy-eight".