7128927994 has 8 divisors (see below), whose sum is σ = 10693944000. Its totient is φ = 3564279996.

The previous prime is 7128927959. The next prime is 7128928031. The reversal of 7128927994 is 4997298217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7128927994² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36994 + ... + 125005.

It is an arithmetic number, because the mean of its divisors is an integer number (1336743000).

Almost surely, 2^7128927994 is an apocalyptic number.

7128927994 is a deficient number, since it is larger than the sum of its proper divisors (3565016006).

7128927994 is a wasteful number, since it uses less digits than its factorization.

7128927994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184004.

The product of its digits is 4572288, while the sum is 58.

The square root of 7128927994 is about 84432.9793031135. The cubic root of 7128927994 is about 1924.6041121235.

The spelling of 7128927994 in words is "seven billion, one hundred twenty-eight million, nine hundred twenty-seven thousand, nine hundred ninety-four".