727720 has 64 divisors (see below), whose sum is σ = 1969920. Its totient is φ = 236544.

The previous prime is 727717. The next prime is 727729. The reversal of 727720 is 27727.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (727729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6384 + ... + 6496.

It is an arithmetic number, because the mean of its divisors is an integer number (30780).

2⁷²⁷⁷²⁰ is an apocalyptic number.

727720 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 727720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984960).

727720 is an abundant number, since it is smaller than the sum of its proper divisors (1242200).

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

727720 is a wasteful number, since it uses less digits than its factorization.

727720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 25.

The square root of 727720 is about 853.0650619970. The cubic root of 727720 is about 89.9472942434.

The spelling of 727720 in words is "seven hundred twenty-seven thousand, seven hundred twenty", and thus it is an iban number.