2291976 has 64 divisors (see below), whose sum is σ = 6494400. Its totient is φ = 758160.

The previous prime is 2291963. The next prime is 2291983. The reversal of 2291976 is 6791922.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2291976.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17431 + ... + 17561.

It is an arithmetic number, because the mean of its divisors is an integer number (101475).

2^2291976 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 2291976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3247200).

2291976 is an abundant number, since it is smaller than the sum of its proper divisors (4202424).

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

2291976 is an equidigital number, since it uses as much as digits as its factorization.

2291976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 136 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 2291976 is about 1513.9273430386. The cubic root of 2291976 is about 131.8469300034.

The spelling of 2291976 in words is "two million, two hundred ninety-one thousand, nine hundred seventy-six".