213387798 has 32 divisors (see below), whose sum is σ = 461222496. Its totient is φ = 65426688.

The previous prime is 213387793. The next prime is 213387799. The reversal of 213387798 is 897783312.

213387798 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213387793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18186 + ... + 27522.

It is an arithmetic number, because the mean of its divisors is an integer number (14413203).

Almost surely, 2^213387798 is an apocalyptic number.

213387798 is an abundant number, since it is smaller than the sum of its proper divisors (247834698).

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

213387798 is a wasteful number, since it uses less digits than its factorization.

213387798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9648.

The product of its digits is 508032, while the sum is 48.

The square root of 213387798 is about 14607.7992182259. The cubic root of 213387798 is about 597.5714781758.

It can be divided in two parts, 213387 and 798, that added together give a triangular number (214185 = T₆₅₄).

The spelling of 213387798 in words is "two hundred thirteen million, three hundred eighty-seven thousand, seven hundred ninety-eight".