728727501870 has 192 divisors, whose sum is σ = 1979425603584. Its totient is φ = 185796737280.

The previous prime is 728727501833. The next prime is 728727501937. The reversal of 728727501870 is 78105727827.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 133049572 + ... + 133055048.

It is an arithmetic number, because the mean of its divisors is an integer number (10309508352).

Almost surely, 2^728727501870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 728727501870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989712801792).

728727501870 is an abundant number, since it is smaller than the sum of its proper divisors (1250698101714).

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

728727501870 is a wasteful number, since it uses less digits than its factorization.

728727501870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6087 (or 6084 counting only the distinct ones).

The product of its (nonzero) digits is 3073280, while the sum is 54.

The spelling of 728727501870 in words is "seven hundred twenty-eight billion, seven hundred twenty-seven million, five hundred one thousand, eight hundred seventy".