213396810 has 48 divisors (see below), whose sum is σ = 562953888. Its totient is φ = 51731680.

The previous prime is 213396803. The next prime is 213396811. The reversal of 213396810 is 18693312.

It is a super-2 number, since 2×213396810² = 91076397036352200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213396811) 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 23 ways as a sum of consecutive naturals, for example, 25764 + ... + 33023.

It is an arithmetic number, because the mean of its divisors is an integer number (11728206).

Almost surely, 2^213396810 is an apocalyptic number.

213396810 is an abundant number, since it is smaller than the sum of its proper divisors (349557078).

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

213396810 is a wasteful number, since it uses less digits than its factorization.

213396810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58819 (or 58808 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 213396810 is about 14608.1076803260. The cubic root of 213396810 is about 597.5798904631.

The spelling of 213396810 in words is "two hundred thirteen million, three hundred ninety-six thousand, eight hundred ten".