728430148170 has 48 divisors (see below), whose sum is σ = 1893964592520. Its totient is φ = 194243300352.

The previous prime is 728430148141. The next prime is 728430148181. The reversal of 728430148170 is 71841034827.

728430148170 is a `hidden beast` number, since 7 + 2 + 8 + 430 + 1 + 48 + 170 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 345641695569 + 382788452601 = 587913^2 + 618699^2 .

It is a super-2 number, since 2×728430148170² (a number of 25 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 5155426 + ... + 5294834.

Almost surely, 2^728430148170 is an apocalyptic number.

728430148170 is an abundant number, since it is smaller than the sum of its proper divisors (1165534444350).

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

728430148170 is a wasteful number, since it uses less digits than its factorization.

728430148170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197479 (or 197476 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 728430148170 in words is "seven hundred twenty-eight billion, four hundred thirty million, one hundred forty-eight thousand, one hundred seventy".