2447240 has 32 divisors (see below), whose sum is σ = 5552280. Its totient is φ = 970752.

The previous prime is 2447239. The next prime is 2447251. The reversal of 2447240 is 427442.

It can be written as a sum of positive squares in 4 ways, for example, as 1012036 + 1435204 = 1006^2 + 1198^2 .

It is a plaindrome in base 14 and base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7562 + ... + 7878.

2^2447240 is an apocalyptic number.

2447240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2447240 is an abundant number, since it is smaller than the sum of its proper divisors (3105040).

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

2447240 is a wasteful number, since it uses less digits than its factorization.

2447240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 2447240 is about 1564.3656861489. The cubic root of 2447240 is about 134.7593334464.

The spelling of 2447240 in words is "two million, four hundred forty-seven thousand, two hundred forty".