2988640 has 24 divisors (see below), whose sum is σ = 7061040. Its totient is φ = 1195392.

The previous prime is 2988637. The next prime is 2988647. The reversal of 2988640 is 468892.

It is a self number, because there is not a number n which added to its sum of digits gives 2988640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2988647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9180 + ... + 9499.

It is an arithmetic number, because the mean of its divisors is an integer number (294210).

2^2988640 is an apocalyptic number.

2988640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2988640 is an abundant number, since it is smaller than the sum of its proper divisors (4072400).

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

2988640 is a wasteful number, since it uses less digits than its factorization.

2988640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18694 (or 18686 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 2988640 is about 1728.7683476973. The cubic root of 2988640 is about 144.0426828205.

The spelling of 2988640 in words is "two million, nine hundred eighty-eight thousand, six hundred forty".