213639102 has 48 divisors (see below), whose sum is σ = 491287680. Its totient is φ = 66863616.

The previous prime is 213639067. The next prime is 213639109. The reversal of 213639102 is 201936312.

213639102 is a `hidden beast` number, since 2 + 13 + 639 + 10 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213639109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247123 + ... + 247985.

It is an arithmetic number, because the mean of its divisors is an integer number (10235160).

Almost surely, 2^213639102 is an apocalyptic number.

213639102 is an abundant number, since it is smaller than the sum of its proper divisors (277648578).

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

213639102 is a wasteful number, since it uses less digits than its factorization.

213639102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 213639102 is about 14616.3983935852. The cubic root of 213639102 is about 597.8059701677.

The spelling of 213639102 in words is "two hundred thirteen million, six hundred thirty-nine thousand, one hundred two".