7139152728 has 40 divisors (see below), whose sum is σ = 19996239780. Its totient is φ = 2379717360.

The previous prime is 7139152723. The next prime is 7139152747. The reversal of 7139152728 is 8272519317.

7139152728 is a `hidden beast` number, since 7 + 13 + 91 + 527 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7139152721) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5507958 + ... + 5509253.

Almost surely, 2^7139152728 is an apocalyptic number.

It is an amenable number.

7139152728 is an abundant number, since it is smaller than the sum of its proper divisors (12857087052).

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

7139152728 is a wasteful number, since it uses less digits than its factorization.

7139152728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11017229 (or 11017216 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 7139152728 is about 84493.5070168117. The cubic root of 7139152728 is about 1925.5237999339.

The spelling of 7139152728 in words is "seven billion, one hundred thirty-nine million, one hundred fifty-two thousand, seven hundred twenty-eight".