7428108639 has 32 divisors (see below), whose sum is σ = 11991490560. Its totient is φ = 3992735232.

The previous prime is 7428108613. The next prime is 7428108647. The reversal of 7428108639 is 9368018247.

It is not a de Polignac number, because 7428108639 - 2⁵ = 7428108607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428108839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 794677 + ... + 803969.

It is an arithmetic number, because the mean of its divisors is an integer number (374734080).

Almost surely, 2^7428108639 is an apocalyptic number.

7428108639 is a deficient number, since it is larger than the sum of its proper divisors (4563381921).

7428108639 is a wasteful number, since it uses less digits than its factorization.

7428108639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11559.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 7428108639 is about 86186.4759634596. The cubic root of 7428108639 is about 1951.1593928485.

The spelling of 7428108639 in words is "seven billion, four hundred twenty-eight million, one hundred eight thousand, six hundred thirty-nine".