920730 has 32 divisors (see below), whose sum is σ = 2260224. Its totient is φ = 239936.

The previous prime is 920729. The next prime is 920741. The reversal of 920730 is 37029.

It is a junction number, because it is equal to n+sod(n) for n = 920697 and 920706.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 920730.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1084 + ... + 1736.

It is an arithmetic number, because the mean of its divisors is an integer number (70632).

2⁹²⁰⁷³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 920730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130112).

920730 is an abundant number, since it is smaller than the sum of its proper divisors (1339494).

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

920730 is a wasteful number, since it uses less digits than its factorization.

920730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 920730 is about 959.5467680108. The cubic root of 920730 is about 97.2846000907.

Adding to 920730 its reverse (37029), we get a palindrome (957759).

The spelling of 920730 in words is "nine hundred twenty thousand, seven hundred thirty".