8021518 has 8 divisors (see below), whose sum is σ = 12740112. Its totient is φ = 3774816.

The previous prime is 8021471. The next prime is 8021539. The reversal of 8021518 is 8151208.

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 = 8021492 and 8021501.

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, 117930 + ... + 117997.

It is an arithmetic number, because the mean of its divisors is an integer number (1592514).

Almost surely, 2^8021518 is an apocalyptic number.

8021518 is a deficient number, since it is larger than the sum of its proper divisors (4718594).

8021518 is a wasteful number, since it uses less digits than its factorization.

8021518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235946.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 8021518 is about 2832.2284512376. The cubic root of 8021518 is about 200.1791561341.

It can be divided in two parts, 80 and 21518, that multiplied together give a triangular number (1721440 = T₁₈₅₅).

The spelling of 8021518 in words is "eight million, twenty-one thousand, five hundred eighteen".