2538435720 has 64 divisors (see below), whose sum is σ = 8016120000. Its totient is φ = 641288448.

The previous prime is 2538435719. The next prime is 2538435763. The reversal of 2538435720 is 275348352.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 554395 + ... + 558954.

It is an arithmetic number, because the mean of its divisors is an integer number (125251875).

Almost surely, 2^2538435720 is an apocalyptic number.

2538435720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2538435720 is an abundant number, since it is smaller than the sum of its proper divisors (5477684280).

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

2538435720 is a wasteful number, since it uses less digits than its factorization.

2538435720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113382 (or 1113378 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 2538435720 is about 50382.8911437206. The cubic root of 2538435720 is about 1364.1288380578.

The spelling of 2538435720 in words is "two billion, five hundred thirty-eight million, four hundred thirty-five thousand, seven hundred twenty".