7282139128 has 96 divisors (see below), whose sum is σ = 15293350800. Its totient is φ = 3247777280.

The previous prime is 7282139107. The next prime is 7282139141. The reversal of 7282139128 is 8219312827.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18719958 + ... + 18720346.

Almost surely, 2^7282139128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7282139128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7646675400).

7282139128 is an abundant number, since it is smaller than the sum of its proper divisors (8011211672).

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

7282139128 is a wasteful number, since it uses less digits than its factorization.

7282139128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 718 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 7282139128 is about 85335.4505935253. The cubic root of 7282139128 is about 1938.2940265308.

The spelling of 7282139128 in words is "seven billion, two hundred eighty-two million, one hundred thirty-nine thousand, one hundred twenty-eight".