213427836 has 36 divisors (see below), whose sum is σ = 567894600. Its totient is φ = 67398048.

The previous prime is 213427813. The next prime is 213427859. The reversal of 213427836 is 638724312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (213427813) and next prime (213427859).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 213427836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155331 + ... + 156698.

It is an arithmetic number, because the mean of its divisors is an integer number (15774850).

Almost surely, 2^213427836 is an apocalyptic number.

It is an amenable number.

213427836 is an abundant number, since it is smaller than the sum of its proper divisors (354466764).

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

213427836 is a wasteful number, since it uses less digits than its factorization.

213427836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312058 (or 312053 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 213427836 is about 14609.1695862564. The cubic root of 213427836 is about 597.6088499950.

The spelling of 213427836 in words is "two hundred thirteen million, four hundred twenty-seven thousand, eight hundred thirty-six".