408018 has 16 divisors (see below), whose sum is σ = 878976. Its totient is φ = 125520.

The previous prime is 408011. The next prime is 408019. The reversal of 408018 is 810804.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 407985 and 408003.

It is not an unprimeable number, because it can be changed into a prime (408011) by changing a digit.

408018 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2538 + ... + 2693.

It is an arithmetic number, because the mean of its divisors is an integer number (54936).

2⁴⁰⁸⁰¹⁸ is an apocalyptic number.

408018 is an abundant number, since it is smaller than the sum of its proper divisors (470958).

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

408018 is a wasteful number, since it uses less digits than its factorization.

408018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5249.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 408018 is about 638.7628667980. The cubic root of 408018 is about 74.1696860839.

The spelling of 408018 in words is "four hundred eight thousand, eighteen".