8418240 has 168 divisors, whose sum is σ = 30114240. Its totient is φ = 2156544.

The previous prime is 8418233. The next prime is 8418251. The reversal of 8418240 is 428148.

8418240 is a `hidden beast` number, since 8 + 418 + 240 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106521 + ... + 106599.

Almost surely, 2^8418240 is an apocalyptic number.

8418240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8418240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15057120).

8418240 is an abundant number, since it is smaller than the sum of its proper divisors (21696000).

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

8418240 is a wasteful number, since it uses less digits than its factorization.

8418240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 8418240 is about 2901.4203418326. The cubic root of 8418240 is about 203.4263004658.

The spelling of 8418240 in words is "eight million, four hundred eighteen thousand, two hundred forty".