3128276394 has 24 divisors (see below), whose sum is σ = 7134666240. Its totient is φ = 987876648.

The previous prime is 3128276387. The next prime is 3128276443. The reversal of 3128276394 is 4936728213.

3128276394 is a `hidden beast` number, since 3 + 1 + 2 + 8 + 2 + 7 + 639 + 4 = 666.

It is a super-2 number, since 2×3128276394² = 19572226394515286472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4573162 + ... + 4573845.

It is an arithmetic number, because the mean of its divisors is an integer number (297277760).

Almost surely, 2^3128276394 is an apocalyptic number.

3128276394 is an abundant number, since it is smaller than the sum of its proper divisors (4006389846).

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

3128276394 is a wasteful number, since it uses less digits than its factorization.

3128276394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9147034 (or 9147031 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 3128276394 is about 55930.9967191717. The cubic root of 3128276394 is about 1462.5196364666.

The spelling of 3128276394 in words is "three billion, one hundred twenty-eight million, two hundred seventy-six thousand, three hundred ninety-four".