213372638 has 8 divisors (see below), whose sum is σ = 320215680. Its totient is φ = 106634080.

The previous prime is 213372629. The next prime is 213372671. The reversal of 213372638 is 836273312.

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

It is a junction number, because it is equal to n+sod(n) for n = 213372598 and 213372607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20798 + ... + 29313.

It is an arithmetic number, because the mean of its divisors is an integer number (40026960).

Almost surely, 2^213372638 is an apocalyptic number.

213372638 is a deficient number, since it is larger than the sum of its proper divisors (106843042).

213372638 is a wasteful number, since it uses less digits than its factorization.

213372638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52242.

The product of its digits is 36288, while the sum is 35.

The square root of 213372638 is about 14607.2803081203. The cubic root of 213372638 is about 597.5573264792.

The spelling of 213372638 in words is "two hundred thirteen million, three hundred seventy-two thousand, six hundred thirty-eight".