4728490638 has 16 divisors (see below), whose sum is σ = 9458176896. Its totient is φ = 1575964280.

The previous prime is 4728490633. The next prime is 4728490649. The reversal of 4728490638 is 8360948274.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4728490633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6493 + ... + 97463.

It is an arithmetic number, because the mean of its divisors is an integer number (591136056).

Almost surely, 2^4728490638 is an apocalyptic number.

4728490638 is an abundant number, since it is smaller than the sum of its proper divisors (4729686258).

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

4728490638 is a wasteful number, since it uses less digits than its factorization.

4728490638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99639.

The product of its (nonzero) digits is 2322432, while the sum is 51.

The square root of 4728490638 is about 68764.0213920041. The cubic root of 4728490638 is about 1678.4465323732.

The spelling of 4728490638 in words is "four billion, seven hundred twenty-eight million, four hundred ninety thousand, six hundred thirty-eight".