2491392 has 44 divisors (see below), whose sum is σ = 6648656. Its totient is φ = 829440.

The previous prime is 2491387. The next prime is 2491397. The reversal of 2491392 is 2931942.

It is an interprime number because it is at equal distance from previous prime (2491387) and next prime (2491397).

It is not an unprimeable number, because it can be changed into a prime (2491397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2667 + ... + 3477.

2^2491392 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 2491392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3324328).

2491392 is an abundant number, since it is smaller than the sum of its proper divisors (4157264).

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

2491392 is an equidigital number, since it uses as much as digits as its factorization.

2491392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 816 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 2491392 is about 1578.4143942577. The cubic root of 2491392 is about 135.5649303240.

The spelling of 2491392 in words is "two million, four hundred ninety-one thousand, three hundred ninety-two".