428273306460 has 144 divisors (see below), whose sum is σ = 1370259596160. Its totient is φ = 107974581120.

The previous prime is 428273306449. The next prime is 428273306477. The reversal of 428273306460 is 64603372824.

428273306460 is a `hidden beast` number, since 4 + 282 + 7 + 3 + 306 + 4 + 60 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1551699 + ... + 1806741.

It is an arithmetic number, because the mean of its divisors is an integer number (9515691640).

Almost surely, 2^428273306460 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 428273306460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685129798080).

428273306460 is an abundant number, since it is smaller than the sum of its proper divisors (941986289700).

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

428273306460 is a wasteful number, since it uses less digits than its factorization.

428273306460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255568 (or 255563 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

The spelling of 428273306460 in words is "four hundred twenty-eight billion, two hundred seventy-three million, three hundred six thousand, four hundred sixty".