1628574497280 has 480 divisors, whose sum is σ = 5978565450000. Its totient is φ = 408290328576.

The previous prime is 1628574497239. The next prime is 1628574497287. The reversal of 1628574497280 is 827944758261.

It is a happy number.

1628574497280 is a `hidden beast` number, since 1 + 6 + 285 + 74 + 4 + 9 + 7 + 280 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 774709790976 + 853864706304 = 880176^2 + 924048^2 .

It is a tau number, because it is divible by the number of its divisors (480).

It is not an unprimeable number, because it can be changed into a prime (1628574497287) 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, 489206656 + ... + 489209984.

Almost surely, 2^{1628574497280} is an apocalyptic number.

1628574497280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1628574497280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2989282725000).

1628574497280 is an abundant number, since it is smaller than the sum of its proper divisors (4349990952720).

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

1628574497280 is a wasteful number, since it uses less digits than its factorization.

1628574497280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624 (or 4605 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 1628574497280 in words is "one trillion, six hundred twenty-eight billion, five hundred seventy-four million, four hundred ninety-seven thousand, two hundred eighty".