84023018 has 4 divisors (see below), whose sum is σ = 126034530. Its totient is φ = 42011508.

The previous prime is 84022973. The next prime is 84023039. The reversal of 84023018 is 81032048.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 71961289 + 12061729 = 8483^2 + 3473^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21005753 + ... + 21005756.

Almost surely, 2^84023018 is an apocalyptic number.

84023018 is a deficient number, since it is larger than the sum of its proper divisors (42011512).

84023018 is a wasteful number, since it uses less digits than its factorization.

84023018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42011511.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 84023018 is about 9166.4070387475. The cubic root of 84023018 is about 437.9919134194.

The spelling of 84023018 in words is "eighty-four million, twenty-three thousand, eighteen".