2491078072 has 72 divisors (see below), whose sum is σ = 5495769000. Its totient is φ = 1055474784.

The previous prime is 2491078033. The next prime is 2491078111. The reversal of 2491078072 is 2708701942.

It is an interprime number because it is at equal distance from previous prime (2491078033) and next prime (2491078111).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4158429 + ... + 4159027.

It is an arithmetic number, because the mean of its divisors is an integer number (76330125).

Almost surely, 2^2491078072 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 2491078072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2747884500).

2491078072 is an abundant number, since it is smaller than the sum of its proper divisors (3004690928).

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

2491078072 is a wasteful number, since it uses less digits than its factorization.

2491078072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 2491078072 is about 49910.7009768446. The cubic root of 2491078072 is about 1355.5923612908.

The spelling of 2491078072 in words is "two billion, four hundred ninety-one million, seventy-eight thousand, seventy-two".