727173720 has 512 divisors, whose sum is σ = 3064320000. Its totient is φ = 152409600.

The previous prime is 727173709. The next prime is 727173737. The reversal of 727173720 is 27371727.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4815645 + ... + 4815795.

It is an arithmetic number, because the mean of its divisors is an integer number (5985000).

Almost surely, 2^727173720 is an apocalyptic number.

727173720 is a gapful number since it is divisible by the number (70) 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 727173720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1532160000).

727173720 is an abundant number, since it is smaller than the sum of its proper divisors (2337146280).

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

727173720 is a wasteful number, since it uses less digits than its factorization.

727173720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 28812, while the sum is 36.

The square root of 727173720 is about 26966.1587920861. The cubic root of 727173720 is about 899.2478159742.

The spelling of 727173720 in words is "seven hundred twenty-seven million, one hundred seventy-three thousand, seven hundred twenty".