8213138 has 8 divisors (see below), whose sum is σ = 12493440. Its totient is φ = 4048660.

The previous prime is 8213131. The next prime is 8213147. The reversal of 8213138 is 8313128.

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

It is not an unprimeable number, because it can be changed into a prime (8213131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28778 + ... + 29061.

It is an arithmetic number, because the mean of its divisors is an integer number (1561680).

Almost surely, 2^8213138 is an apocalyptic number.

8213138 is a deficient number, since it is larger than the sum of its proper divisors (4280302).

8213138 is a wasteful number, since it uses less digits than its factorization.

8213138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57912.

The product of its digits is 1152, while the sum is 26.

The square root of 8213138 is about 2865.8572888405. The cubic root of 8213138 is about 201.7606058567.

The spelling of 8213138 in words is "eight million, two hundred thirteen thousand, one hundred thirty-eight".