7288398838 has 16 divisors (see below), whose sum is σ = 13037633280. Its totient is φ = 2987790696.

The previous prime is 7288398833. The next prime is 7288398847. The reversal of 7288398838 is 8388938827.

It is a self number, because there is not a number n which added to its sum of digits gives 7288398838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7288398833) 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, 11317068 + ... + 11317711.

It is an arithmetic number, because the mean of its divisors is an integer number (814852080).

Almost surely, 2^7288398838 is an apocalyptic number.

7288398838 is a deficient number, since it is larger than the sum of its proper divisors (5749234442).

7288398838 is a wasteful number, since it uses less digits than its factorization.

7288398838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22634811.

The product of its digits is 37158912, while the sum is 64.

The square root of 7288398838 is about 85372.1197932908. The cubic root of 7288398838 is about 1938.8492518294.

The spelling of 7288398838 in words is "seven billion, two hundred eighty-eight million, three hundred ninety-eight thousand, eight hundred thirty-eight".