8406018 has 40 divisors (see below), whose sum is σ = 19834320. Its totient is φ = 2653560.

The previous prime is 8406001. The next prime is 8406043. The reversal of 8406018 is 8106048.

It is a super-2 number, since 2×8406018² = 141322277232648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 8405982 and 8406000.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1713 + ... + 4443.

It is an arithmetic number, because the mean of its divisors is an integer number (495858).

Almost surely, 2^8406018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8406018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9917160).

8406018 is an abundant number, since it is smaller than the sum of its proper divisors (11428302).

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

8406018 is a wasteful number, since it uses less digits than its factorization.

8406018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764 (or 2755 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 8406018 is about 2899.3133669888. The cubic root of 8406018 is about 203.3278048006.

The spelling of 8406018 in words is "eight million, four hundred six thousand, eighteen".