2491280376 has 192 divisors, whose sum is σ = 7039146240. Its totient is φ = 733824000.

The previous prime is 2491280359. The next prime is 2491280401. The reversal of 2491280376 is 6730821942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11806911 + ... + 11807121.

It is an arithmetic number, because the mean of its divisors is an integer number (36662220).

Almost surely, 2^2491280376 is an apocalyptic number.

2491280376 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2491280376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3519573120).

2491280376 is an abundant number, since it is smaller than the sum of its proper divisors (4547865864).

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

2491280376 is a wasteful number, since it uses less digits than its factorization.

2491280376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 2491280376 is about 49912.7275952737. The cubic root of 2491280376 is about 1355.6290568265.

The spelling of 2491280376 in words is "two billion, four hundred ninety-one million, two hundred eighty thousand, three hundred seventy-six".