2991140 has 24 divisors (see below), whose sum is σ = 6314112. Its totient is φ = 1190240.

The previous prime is 2991139. The next prime is 2991143. The reversal of 2991140 is 411992.

It is not an unprimeable number, because it can be changed into a prime (2991143) 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, 6725 + ... + 7155.

It is an arithmetic number, because the mean of its divisors is an integer number (263088).

2^2991140 is an apocalyptic number.

2991140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2991140 is an abundant number, since it is smaller than the sum of its proper divisors (3322972).

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

2991140 is a wasteful number, since it uses less digits than its factorization.

2991140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 2991140 is about 1729.4912546758. The cubic root of 2991140 is about 144.0828355704.

The spelling of 2991140 in words is "two million, nine hundred ninety-one thousand, one hundred forty".