213582630 has 32 divisors (see below), whose sum is σ = 512999424. Its totient is φ = 56910816.

The previous prime is 213582613. The next prime is 213582637. The reversal of 213582630 is 36285312.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213582637) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 57819 + ... + 61401.

It is an arithmetic number, because the mean of its divisors is an integer number (16031232).

Almost surely, 2^213582630 is an apocalyptic number.

213582630 is an abundant number, since it is smaller than the sum of its proper divisors (299416794).

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

213582630 is a wasteful number, since it uses less digits than its factorization.

213582630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 213582630 is about 14614.4664630632. The cubic root of 213582630 is about 597.7532921179.

The spelling of 213582630 in words is "two hundred thirteen million, five hundred eighty-two thousand, six hundred thirty".