2521740920 has 64 divisors (see below), whose sum is σ = 5837529600. Its totient is φ = 979706880.

The previous prime is 2521740899. The next prime is 2521740941. The reversal of 2521740920 is 290471252.

It is an interprime number because it is at equal distance from previous prime (2521740899) and next prime (2521740941).

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 15 ways as a sum of consecutive naturals, for example, 1125161 + ... + 1127399.

It is an arithmetic number, because the mean of its divisors is an integer number (91211400).

Almost surely, 2^2521740920 is an apocalyptic number.

2521740920 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 2521740920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2918764800).

2521740920 is an abundant number, since it is smaller than the sum of its proper divisors (3315788680).

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

2521740920 is a wasteful number, since it uses less digits than its factorization.

2521740920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048 (or 3044 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2521740920 is about 50216.9385765401. The cubic root of 2521740920 is about 1361.1317208979.

The spelling of 2521740920 in words is "two billion, five hundred twenty-one million, seven hundred forty thousand, nine hundred twenty".