213693424 has 40 divisors (see below), whose sum is σ = 473878400. Its totient is φ = 91447488.

The previous prime is 213693419. The next prime is 213693427. The reversal of 213693424 is 424396312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 213693424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213693427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124927 + ... + 126625.

It is an arithmetic number, because the mean of its divisors is an integer number (11846960).

Almost surely, 2^213693424 is an apocalyptic number.

It is an amenable number.

213693424 is an abundant number, since it is smaller than the sum of its proper divisors (260184976).

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

213693424 is a wasteful number, since it uses less digits than its factorization.

213693424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837 (or 2831 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 213693424 is about 14618.2565307905. The cubic root of 213693424 is about 597.8566339017.

The spelling of 213693424 in words is "two hundred thirteen million, six hundred ninety-three thousand, four hundred twenty-four".