213595780 has 12 divisors (see below), whose sum is σ = 448551180. Its totient is φ = 85438304.

The previous prime is 213595763. The next prime is 213595787. The reversal of 213595780 is 87595312.

213595780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 57395776 + 156200004 = 7576^2 + 12498^2 .

It is not an unprimeable number, because it can be changed into a prime (213595787) 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, 5339875 + ... + 5339914.

It is an arithmetic number, because the mean of its divisors is an integer number (37379265).

Almost surely, 2^213595780 is an apocalyptic number.

213595780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213595780 is an abundant number, since it is smaller than the sum of its proper divisors (234955400).

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

213595780 is a wasteful number, since it uses less digits than its factorization.

213595780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10679798 (or 10679796 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 213595780 is about 14614.9163528226. The cubic root of 213595780 is about 597.7655594926.

The spelling of 213595780 in words is "two hundred thirteen million, five hundred ninety-five thousand, seven hundred eighty".