2638472628 has 24 divisors (see below), whose sum is σ = 6716112480. Its totient is φ = 799537120.

The previous prime is 2638472621. The next prime is 2638472633. The reversal of 2638472628 is 8262748362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638472621) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9994083 + ... + 9994346.

It is an arithmetic number, because the mean of its divisors is an integer number (279838020).

Almost surely, 2^2638472628 is an apocalyptic number.

It is an amenable number.

2638472628 is an abundant number, since it is smaller than the sum of its proper divisors (4077639852).

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

2638472628 is a wasteful number, since it uses less digits than its factorization.

2638472628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19988447 (or 19988445 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 48.

The square root of 2638472628 is about 51366.0649456429. The cubic root of 2638472628 is about 1381.8180595604.

The spelling of 2638472628 in words is "two billion, six hundred thirty-eight million, four hundred seventy-two thousand, six hundred twenty-eight".