2391272520 has 512 divisors, whose sum is σ = 9313920000. Its totient is φ = 487710720.

The previous prime is 2391272501. The next prime is 2391272539. The reversal of 2391272520 is 252721932.

It is an interprime number because it is at equal distance from previous prime (2391272501) and next prime (2391272539).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 21938226 + ... + 21938334.

It is an arithmetic number, because the mean of its divisors is an integer number (18191250).

Almost surely, 2^2391272520 is an apocalyptic number.

2391272520 is a gapful number since it is divisible by the number (20) 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 2391272520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4656960000).

2391272520 is an abundant number, since it is smaller than the sum of its proper divisors (6922647480).

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

2391272520 is a wasteful number, since it uses less digits than its factorization.

2391272520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 2391272520 is about 48900.6392596252. The cubic root of 2391272520 is about 1337.2410226737.

It can be divided in two parts, 2391 and 272520, that added together give a triangular number (274911 = T₇₄₁).

The spelling of 2391272520 in words is "two billion, three hundred ninety-one million, two hundred seventy-two thousand, five hundred twenty".