213398436 has 12 divisors (see below), whose sum is σ = 497929712. Its totient is φ = 71132808.

The previous prime is 213398431. The next prime is 213398447. The reversal of 213398436 is 634893312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 213398394 and 213398403.

It is not an unprimeable number, because it can be changed into a prime (213398431) 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 3 ways as a sum of consecutive naturals, for example, 8891590 + ... + 8891613.

Almost surely, 2^213398436 is an apocalyptic number.

It is an amenable number.

213398436 is an abundant number, since it is smaller than the sum of its proper divisors (284531276).

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

213398436 is a wasteful number, since it uses less digits than its factorization.

213398436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17783210 (or 17783208 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 213398436 is about 14608.1633342457. The cubic root of 213398436 is about 597.5814082340.

The spelling of 213398436 in words is "two hundred thirteen million, three hundred ninety-eight thousand, four hundred thirty-six".