2991996 has 72 divisors (see below), whose sum is σ = 8945664. Its totient is φ = 825120.

The previous prime is 2991971. The next prime is 2992007. The reversal of 2991996 is 6991992.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7621 + ... + 8003.

2^2991996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2991996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4472832).

2991996 is an abundant number, since it is smaller than the sum of its proper divisors (5953668).

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

2991996 is a wasteful number, since it uses less digits than its factorization.

2991996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 426 counting only the distinct ones).

The product of its digits is 78732, while the sum is 45.

The square root of 2991996 is about 1729.7387085916. The cubic root of 2991996 is about 144.0965787301.

The spelling of 2991996 in words is "two million, nine hundred ninety-one thousand, nine hundred ninety-six".