2991340 has 24 divisors (see below), whose sum is σ = 6853392. Its totient is φ = 1087680.

The previous prime is 2991299. The next prime is 2991353. The reversal of 2991340 is 431992.

It is a happy number.

It is a super-2 number, since 2×2991340² = 17896229991200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2991299 and 2991308.

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, 6579 + ... + 7018.

It is an arithmetic number, because the mean of its divisors is an integer number (285558).

2^2991340 is an apocalyptic number.

2991340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2991340 is an abundant number, since it is smaller than the sum of its proper divisors (3862052).

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

2991340 is a wasteful number, since it uses less digits than its factorization.

2991340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13617 (or 13615 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2991340 is about 1729.5490741809. The cubic root of 2991340 is about 144.0860468237.

The spelling of 2991340 in words is "two million, nine hundred ninety-one thousand, three hundred forty".