428785503102 has 96 divisors (see below), whose sum is σ = 1072796400000. Its totient is φ = 122408435520.

The previous prime is 428785503077. The next prime is 428785503109. The reversal of 428785503102 is 201305587824.

428785503102 is a `hidden beast` number, since 4 + 2 + 87 + 8 + 550 + 3 + 10 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428785503109) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 355024 + ... + 991772.

It is an arithmetic number, because the mean of its divisors is an integer number (11174962500).

Almost surely, 2^428785503102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428785503102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536398200000).

428785503102 is an abundant number, since it is smaller than the sum of its proper divisors (644010896898).

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

428785503102 is a wasteful number, since it uses less digits than its factorization.

428785503102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636966 (or 636963 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 428785503102 in words is "four hundred twenty-eight billion, seven hundred eighty-five million, five hundred three thousand, one hundred two".