2491026 has 8 divisors (see below), whose sum is σ = 4982064. Its totient is φ = 830340.

The previous prime is 2491009. The next prime is 2491031. The reversal of 2491026 is 6201942.

It is a sphenic number, since it is the product of 3 distinct primes.

2491026 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2490987 and 2491005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207580 + ... + 207591.

It is an arithmetic number, because the mean of its divisors is an integer number (622758).

2^2491026 is an apocalyptic number.

2491026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2491026 is a wasteful number, since it uses less digits than its factorization.

2491026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415176.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2491026 is about 1578.2984508641. The cubic root of 2491026 is about 135.5582915729.

Adding to 2491026 its reverse (6201942), we get a palindrome (8692968).

It can be divided in two parts, 249 and 1026, that added together give a triangular number (1275 = T₅₀).

The spelling of 2491026 in words is "two million, four hundred ninety-one thousand, twenty-six".