428888845720 has 16 divisors (see below), whose sum is σ = 964999902960. Its totient is φ = 171555538272.

The previous prime is 428888845711. The next prime is 428888845733. The reversal of 428888845720 is 27548888824.

It is a congruent number.

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, 5361110532 + ... + 5361110611.

It is an arithmetic number, because the mean of its divisors is an integer number (60312493935).

Almost surely, 2^428888845720 is an apocalyptic number.

428888845720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428888845720 is an abundant number, since it is smaller than the sum of its proper divisors (536111057240).

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

428888845720 is a wasteful number, since it uses less digits than its factorization.

428888845720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10722221154 (or 10722221150 counting only the distinct ones).

The product of its (nonzero) digits is 73400320, while the sum is 64.

The spelling of 428888845720 in words is "four hundred twenty-eight billion, eight hundred eighty-eight million, eight hundred forty-five thousand, seven hundred twenty".