2990840 has 16 divisors (see below), whose sum is σ = 6729480. Its totient is φ = 1196320.

The previous prime is 2990839. The next prime is 2990879. The reversal of 2990840 is 480992.

It is a junction number, because it is equal to n+sod(n) for n = 2990797 and 2990806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37346 + ... + 37425.

2^2990840 is an apocalyptic number.

2990840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2990840 is an abundant number, since it is smaller than the sum of its proper divisors (3738640).

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

2990840 is a wasteful number, since it uses less digits than its factorization.

2990840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74782 (or 74778 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2990840 is about 1729.4045217936. The cubic root of 2990840 is about 144.0780184220.

The spelling of 2990840 in words is "two million, nine hundred ninety thousand, eight hundred forty".