213802838 has 8 divisors (see below), whose sum is σ = 325097688. Its totient is φ = 105436944.

The previous prime is 213802817. The next prime is 213802889. The reversal of 213802838 is 838208312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 213802798 and 213802807.

It is a congruent number.

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, 732056 + ... + 732347.

It is an arithmetic number, because the mean of its divisors is an integer number (40637211).

Almost surely, 2^213802838 is an apocalyptic number.

213802838 is a deficient number, since it is larger than the sum of its proper divisors (111294850).

213802838 is a wasteful number, since it uses less digits than its factorization.

213802838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464478.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 213802838 is about 14621.9984270277. The cubic root of 213802838 is about 597.9586534576.

The spelling of 213802838 in words is "two hundred thirteen million, eight hundred two thousand, eight hundred thirty-eight".