730381 has 4 divisors (see below), whose sum is σ = 732672. Its totient is φ = 728092.

The previous prime is 730363. The next prime is 730397. The reversal of 730381 is 183037.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 730381 - 2⁷ = 730253 is a prime.

It is a super-2 number, since 2×730381² = 1066912810322, which contains 22 as substring.

It is a Duffinian number.

730381 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571 + ... + 1336.

It is an arithmetic number, because the mean of its divisors is an integer number (183168).

2⁷³⁰³⁸¹ is an apocalyptic number.

It is an amenable number.

730381 is a deficient number, since it is larger than the sum of its proper divisors (2291).

730381 is a wasteful number, since it uses less digits than its factorization.

730381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 730381 is about 854.6233088326. The cubic root of 730381 is about 90.0567954268.

It can be divided in two parts, 730 and 381, that added together give a palindrome (1111).

The spelling of 730381 in words is "seven hundred thirty thousand, three hundred eighty-one".