8000018 has 8 divisors (see below), whose sum is σ = 12923148. Its totient is φ = 3692304.

The previous prime is 8000017. The next prime is 8000023. The reversal of 8000018 is 8100008.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6848689 + 1151329 = 2617^2 + 1073^2 .

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

8000018 is a modest number, since divided by 18 gives 8 as remainder.

It is not an unprimeable number, because it can be changed into a prime (8000017) 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, 153821 + ... + 153872.

Almost surely, 2^8000018 is an apocalyptic number.

8000018 is a deficient number, since it is larger than the sum of its proper divisors (4923130).

8000018 is a wasteful number, since it uses less digits than its factorization.

8000018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307708.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 8000018 is about 2828.4303067249. The cubic root of 8000018 is about 200.0001499999. Note that the first 3 decimals are identical.

It can be divided in two parts, 80000 and 18, that multiplied together give a square (1440000 = 1200²).

The spelling of 8000018 in words is "eight million, eighteen", and thus it is an aban number and an uban number.