730620 has 120 divisors (see below), whose sum is σ = 2561328. Its totient is φ = 172800.

The previous prime is 730619. The next prime is 730633. The reversal of 730620 is 26037.

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

It is a junction number, because it is equal to n+sod(n) for n = 730593 and 730602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17800 + ... + 17840.

2⁷³⁰⁶²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 730620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1280664).

730620 is an abundant number, since it is smaller than the sum of its proper divisors (1830708).

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

730620 is a wasteful number, since it uses less digits than its factorization.

730620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 730620 is about 854.7631250820. The cubic root of 730620 is about 90.0666173448.

Adding to 730620 its reverse (26037), we get a palindrome (756657).

The spelling of 730620 in words is "seven hundred thirty thousand, six hundred twenty".