2540390240 has 48 divisors (see below), whose sum is σ = 6354718272. Its totient is φ = 956381184.

The previous prime is 2540390221. The next prime is 2540390261. The reversal of 2540390240 is 420930452.

2540390240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464264 + ... + 469703.

It is an arithmetic number, because the mean of its divisors is an integer number (132389964).

Almost surely, 2^2540390240 is an apocalyptic number.

2540390240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2540390240 is an abundant number, since it is smaller than the sum of its proper divisors (3814328032).

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

2540390240 is a wasteful number, since it uses less digits than its factorization.

2540390240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933999 (or 933991 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2540390240 is about 50402.2840752282. The cubic root of 2540390240 is about 1364.4788611141.

The spelling of 2540390240 in words is "two billion, five hundred forty million, three hundred ninety thousand, two hundred forty".