3128667642 has 48 divisors (see below), whose sum is σ = 7204916160. Its totient is φ = 978397056.

The previous prime is 3128667601. The next prime is 3128667671. The reversal of 3128667642 is 2467668213.

It is a super-2 number, since 2×3128667642² = 19577122428195680328, which contains 22 as substring.

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, 9183 + ... + 79634.

It is an arithmetic number, because the mean of its divisors is an integer number (150102420).

Almost surely, 2^3128667642 is an apocalyptic number.

3128667642 is an abundant number, since it is smaller than the sum of its proper divisors (4076248518).

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

3128667642 is a wasteful number, since it uses less digits than its factorization.

3128667642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88947 (or 88944 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 3128667642 is about 55934.4942052755. The cubic root of 3128667642 is about 1462.5806055070.

The spelling of 3128667642 in words is "three billion, one hundred twenty-eight million, six hundred sixty-seven thousand, six hundred forty-two".