428191045380 has 144 divisors (see below), whose sum is σ = 1486571958144. Its totient is φ = 97728744960.

The previous prime is 428191045339. The next prime is 428191045393. The reversal of 428191045380 is 83540191824.

428191045380 is a `hidden beast` number, since 4 + 2 + 8 + 1 + 9 + 104 + 538 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 611800 + ... + 1109360.

It is an arithmetic number, because the mean of its divisors is an integer number (10323416376).

Almost surely, 2^428191045380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428191045380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (743285979072).

428191045380 is an abundant number, since it is smaller than the sum of its proper divisors (1058380912764).

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

428191045380 is a wasteful number, since it uses less digits than its factorization.

428191045380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498266 (or 498261 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 428191045380 in words is "four hundred twenty-eight billion, one hundred ninety-one million, forty-five thousand, three hundred eighty".