84798018 has 12 divisors (see below), whose sum is σ = 183729078. Its totient is φ = 28266000.

The previous prime is 84798017. The next prime is 84798031. The reversal of 84798018 is 81089748.

It can be written as a sum of positive squares in only one way, i.e., 78907689 + 5890329 = 8883^2 + 2427^2 .

It is not an unprimeable number, because it can be changed into a prime (84798017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2355483 + ... + 2355518.

Almost surely, 2^84798018 is an apocalyptic number.

84798018 is an abundant number, since it is smaller than the sum of its proper divisors (98931060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84798018 is a wasteful number, since it uses less digits than its factorization.

84798018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711009 (or 4711006 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 84798018 is about 9208.5839302251. The cubic root of 84798018 is about 439.3344241502.

The spelling of 84798018 in words is "eighty-four million, seven hundred ninety-eight thousand, eighteen".