4428128608990 has 32 divisors (see below), whose sum is σ = 8516918741760. Its totient is φ = 1651766045184.

The previous prime is 4428128608921. The next prime is 4428128608991. The reversal of 4428128608990 is 998068218244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4428128608991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119466862 + ... + 119503921.

It is an arithmetic number, because the mean of its divisors is an integer number (266153710680).

Almost surely, 2^{4428128608990} is an apocalyptic number.

4428128608990 is a deficient number, since it is larger than the sum of its proper divisors (4088790132770).

4428128608990 is a wasteful number, since it uses less digits than its factorization.

4428128608990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238970916.

The product of its (nonzero) digits is 15925248, while the sum is 61.

The spelling of 4428128608990 in words is "four trillion, four hundred twenty-eight billion, one hundred twenty-eight million, six hundred eight thousand, nine hundred ninety".