2487440 has 80 divisors (see below), whose sum is σ = 6428160. Its totient is φ = 890880.

The previous prime is 2487439. The next prime is 2487467. The reversal of 2487440 is 447842.

2487440 = T₃₈₅ + T₃₈₆ + ... + T₄₁₅.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42131 + ... + 42189.

It is an arithmetic number, because the mean of its divisors is an integer number (80352).

2^2487440 is an apocalyptic number.

2487440 is a gapful number since it is divisible by the number (20) 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 2487440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3214080).

2487440 is an abundant number, since it is smaller than the sum of its proper divisors (3940720).

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

2487440 is a wasteful number, since it uses less digits than its factorization.

2487440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 2487440 is about 1577.1620081653. The cubic root of 2487440 is about 135.4932118983.

The spelling of 2487440 in words is "two million, four hundred eighty-seven thousand, four hundred forty".