727722 has 12 divisors (see below), whose sum is σ = 1576770. Its totient is φ = 242568.

The previous prime is 727717. The next prime is 727729. The reversal of 727722 is 227727.

727722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 488601 + 239121 = 699^2 + 489^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

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

727722 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20197 + ... + 20232.

2⁷²⁷⁷²² is an apocalyptic number.

727722 is an abundant number, since it is smaller than the sum of its proper divisors (849048).

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

727722 is a wasteful number, since it uses less digits than its factorization.

727722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40437 (or 40434 counting only the distinct ones).

The product of its digits is 2744, while the sum is 27.

The square root of 727722 is about 853.0662342398. The cubic root of 727722 is about 89.9473766443.

The spelling of 727722 in words is "seven hundred twenty-seven thousand, seven hundred twenty-two", and thus it is an iban number.