213928392 has 16 divisors (see below), whose sum is σ = 534821040. Its totient is φ = 71309456.

The previous prime is 213928381. The next prime is 213928423. The reversal of 213928392 is 293829312.

It is a self number, because there is not a number n which added to its sum of digits gives 213928392.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4456818 + ... + 4456865.

It is an arithmetic number, because the mean of its divisors is an integer number (33426315).

Almost surely, 2^213928392 is an apocalyptic number.

It is an amenable number.

213928392 is an abundant number, since it is smaller than the sum of its proper divisors (320892648).

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

213928392 is a wasteful number, since it uses less digits than its factorization.

213928392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8913692 (or 8913688 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 213928392 is about 14626.2911224958. The cubic root of 213928392 is about 598.0756793592.

The spelling of 213928392 in words is "two hundred thirteen million, nine hundred twenty-eight thousand, three hundred ninety-two".