2997840 has 40 divisors (see below), whose sum is σ = 9294048. Its totient is φ = 799360.

The previous prime is 2997829. The next prime is 2997847. The reversal of 2997840 is 487992.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2997847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6006 + ... + 6485.

2^2997840 is an apocalyptic number.

2997840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2997840 is an abundant number, since it is smaller than the sum of its proper divisors (6296208).

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

2997840 is a wasteful number, since it uses less digits than its factorization.

2997840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12507 (or 12501 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 2997840 is about 1731.4271570008. The cubic root of 2997840 is about 144.1903347304.

The spelling of 2997840 in words is "two million, nine hundred ninety-seven thousand, eight hundred forty".