8490240 has 216 divisors, whose sum is σ = 32524128. Its totient is φ = 2027520.

The previous prime is 8490233. The next prime is 8490247. The reversal of 8490240 is 420948.

It is an interprime number because it is at equal distance from previous prime (8490233) and next prime (8490247).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8490247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126687 + ... + 126753.

Almost surely, 2^8490240 is an apocalyptic number.

8490240 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 8490240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16262064).

8490240 is an abundant number, since it is smaller than the sum of its proper divisors (24033888).

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

8490240 is a wasteful number, since it uses less digits than its factorization.

8490240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8490240 is about 2913.8016404690. The cubic root of 8490240 is about 204.0046135058.

The spelling of 8490240 in words is "eight million, four hundred ninety thousand, two hundred forty".