2991912 has 64 divisors (see below), whose sum is σ = 9331200. Its totient is φ = 776640.

The previous prime is 2991907. The next prime is 2991917. The reversal of 2991912 is 2191992.

2991912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2991907) and next prime (2991917).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2991917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1039 + ... + 2657.

It is an arithmetic number, because the mean of its divisors is an integer number (145800).

2^2991912 is an apocalyptic number.

2991912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2991912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4665600).

2991912 is an abundant number, since it is smaller than the sum of its proper divisors (6339288).

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

2991912 is a wasteful number, since it uses less digits than its factorization.

2991912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646 (or 1642 counting only the distinct ones).

The product of its digits is 2916, while the sum is 33.

The square root of 2991912 is about 1729.7144272972. The cubic root of 2991912 is about 144.0952302183.

It can be divided in two parts, 299 and 1912, that added together give a triangular number (2211 = T₆₆).

The spelling of 2991912 in words is "two million, nine hundred ninety-one thousand, nine hundred twelve".