4128657988 has 48 divisors (see below), whose sum is σ = 8899761024. Its totient is φ = 1631980800.

The previous prime is 4128657979. The next prime is 4128658003. The reversal of 4128657988 is 8897568214.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524256 + ... + 532072.

It is an arithmetic number, because the mean of its divisors is an integer number (185411688).

Almost surely, 2^4128657988 is an apocalyptic number.

It is an amenable number.

4128657988 is an abundant number, since it is smaller than the sum of its proper divisors (4771103036).

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

4128657988 is a wasteful number, since it uses less digits than its factorization.

4128657988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9292 (or 9290 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 58.

The square root of 4128657988 is about 64254.6339807488. The cubic root of 4128657988 is about 1604.2410904744.

The spelling of 4128657988 in words is "four billion, one hundred twenty-eight million, six hundred fifty-seven thousand, nine hundred eighty-eight".