726120 has 48 divisors (see below), whose sum is σ = 2361060. Its totient is φ = 193536.

The previous prime is 726109. The next prime is 726137. The reversal of 726120 is 21627.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 715716 + 10404 = 846^2 + 102^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 726093 and 726102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 649 + ... + 1368.

2⁷²⁶¹²⁰ is an apocalyptic number.

It is an amenable number.

726120 is an abundant number, since it is smaller than the sum of its proper divisors (1634940).

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

726120 is a wasteful number, since it uses less digits than its factorization.

726120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034 (or 2027 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 726120 is about 852.1267511351. The cubic root of 726120 is about 89.8813250643.

Adding to 726120 its reverse (21627), we get a palindrome (747747).

The spelling of 726120 in words is "seven hundred twenty-six thousand, one hundred twenty".