803128638 has 16 divisors (see below), whose sum is σ = 1729815696. Its totient is φ = 247116480.

The previous prime is 803128631. The next prime is 803128657. The reversal of 803128638 is 836821308.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 803128596 and 803128605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (803128631) 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, 5148183 + ... + 5148338.

It is an arithmetic number, because the mean of its divisors is an integer number (108113481).

Almost surely, 2^803128638 is an apocalyptic number.

803128638 is an abundant number, since it is smaller than the sum of its proper divisors (926687058).

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

803128638 is a wasteful number, since it uses less digits than its factorization.

803128638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10296539.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 803128638 is about 28339.5243079343. The cubic root of 803128638 is about 929.5263468522.

The spelling of 803128638 in words is "eight hundred three million, one hundred twenty-eight thousand, six hundred thirty-eight".