2638502420 has 48 divisors (see below), whose sum is σ = 5647320000. Its totient is φ = 1035202560.

The previous prime is 2638502413. The next prime is 2638502429. The reversal of 2638502420 is 242058362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638502429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586580 + ... + 591060.

It is an arithmetic number, because the mean of its divisors is an integer number (117652500).

Almost surely, 2^2638502420 is an apocalyptic number.

2638502420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2638502420 is an abundant number, since it is smaller than the sum of its proper divisors (3008817580).

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

2638502420 is a wasteful number, since it uses less digits than its factorization.

2638502420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5048 (or 5046 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 2638502420 is about 51366.3549417320. The cubic root of 2638502420 is about 1381.8232604190.

The spelling of 2638502420 in words is "two billion, six hundred thirty-eight million, five hundred two thousand, four hundred twenty".