428980646322 has 126 divisors (see below), whose sum is σ = 1025871012423. Its totient is φ = 134448781824.

The previous prime is 428980646321. The next prime is 428980646329. The reversal of 428980646322 is 223646089824.

428980646322 is a `hidden beast` number, since 4 + 2 + 89 + 80 + 6 + 463 + 22 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 255933798201 + 173046848121 = 505899^2 + 415989^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=463131.

It is a super-3 number, since 3×428980646322³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (428980646321) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 425153754 + ... + 425154762.

Almost surely, 2^428980646322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428980646322

428980646322 is an abundant number, since it is smaller than the sum of its proper divisors (596890366101).

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

428980646322 is an frugal number, since it uses more digits than its factorization.

428980646322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 428980646322 in words is "four hundred twenty-eight billion, nine hundred eighty million, six hundred forty-six thousand, three hundred twenty-two".