213906910 has 32 divisors (see below), whose sum is σ = 444165120. Its totient is φ = 72651552.

The previous prime is 213906893. The next prime is 213906911. The reversal of 213906910 is 19609312.

It is a super-2 number, since 2×213906910² = 91512332291496200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213906911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6790 + ... + 21769.

It is an arithmetic number, because the mean of its divisors is an integer number (13880160).

Almost surely, 2^213906910 is an apocalyptic number.

213906910 is an abundant number, since it is smaller than the sum of its proper divisors (230258210).

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

213906910 is a wasteful number, since it uses less digits than its factorization.

213906910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28680.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 213906910 is about 14625.5567415398. The cubic root of 213906910 is about 598.0556597447.

The spelling of 213906910 in words is "two hundred thirteen million, nine hundred six thousand, nine hundred ten".