213630774 has 16 divisors (see below), whose sum is σ = 488299008. Its totient is φ = 61037352.

The previous prime is 213630749. The next prime is 213630779. The reversal of 213630774 is 477036312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213630779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2543182 + ... + 2543265.

It is an arithmetic number, because the mean of its divisors is an integer number (30518688).

Almost surely, 2^213630774 is an apocalyptic number.

213630774 is an abundant number, since it is smaller than the sum of its proper divisors (274668234).

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

213630774 is a wasteful number, since it uses less digits than its factorization.

213630774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5086459.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 213630774 is about 14616.1135053064. The cubic root of 213630774 is about 597.7982022501.

The spelling of 213630774 in words is "two hundred thirteen million, six hundred thirty thousand, seven hundred seventy-four".