418240 has 28 divisors (see below), whose sum is σ = 996696. Its totient is φ = 167168.

The previous prime is 418219. The next prime is 418259. The reversal of 418240 is 42814.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334 + ... + 973.

2⁴¹⁸²⁴⁰ is an apocalyptic number.

418240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

418240 is an abundant number, since it is smaller than the sum of its proper divisors (578456).

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

418240 is a wasteful number, since it uses less digits than its factorization.

418240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 418240 is about 646.7147748428. The cubic root of 418240 is about 74.7839709426.

It can be divided in two parts, 41 and 8240, that added together give a square (8281 = 91²).

The spelling of 418240 in words is "four hundred eighteen thousand, two hundred forty".