213768396 has 60 divisors (see below), whose sum is σ = 578128320. Its totient is φ = 68796000.

The previous prime is 213768389. The next prime is 213768403. The reversal of 213768396 is 693867312.

It is an interprime number because it is at equal distance from previous prime (213768389) and next prime (213768403).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1980 + ... + 20771.

It is an arithmetic number, because the mean of its divisors is an integer number (9635472).

Almost surely, 2^213768396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213768396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289064160).

213768396 is an abundant number, since it is smaller than the sum of its proper divisors (364359924).

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

213768396 is a wasteful number, since it uses less digits than its factorization.

213768396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22796 (or 22785 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 213768396 is about 14620.8206336033. The cubic root of 213768396 is about 597.9265428799.

The spelling of 213768396 in words is "two hundred thirteen million, seven hundred sixty-eight thousand, three hundred ninety-six".