428777120280 has 64 divisors (see below), whose sum is σ = 1286374428000. Its totient is φ = 114336737280.

The previous prime is 428777120273. The next prime is 428777120297. The reversal of 428777120280 is 82021777824.

It is a congruent 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, 6886890 + ... + 6948870.

Almost surely, 2^428777120280 is an apocalyptic number.

428777120280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428777120280 is an abundant number, since it is smaller than the sum of its proper divisors (857597307720).

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

428777120280 is a wasteful number, since it uses less digits than its factorization.

428777120280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119644 (or 119640 counting only the distinct ones).

The product of its (nonzero) digits is 702464, while the sum is 48.

The spelling of 428777120280 in words is "four hundred twenty-eight billion, seven hundred seventy-seven million, one hundred twenty thousand, two hundred eighty".