84260018 has 4 divisors (see below), whose sum is σ = 126390030. Its totient is φ = 42130008.

The previous prime is 84259999. The next prime is 84260021. The reversal of 84260018 is 81006248.

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., 81848209 + 2411809 = 9047^2 + 1553^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21065003 + ... + 21065006.

Almost surely, 2^84260018 is an apocalyptic number.

84260018 is a deficient number, since it is larger than the sum of its proper divisors (42130012).

84260018 is a wasteful number, since it uses less digits than its factorization.

84260018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42130011.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 84260018 is about 9179.3255743546. The cubic root of 84260018 is about 438.4033349563.

The spelling of 84260018 in words is "eighty-four million, two hundred sixty thousand, eighteen".