730990 has 16 divisors (see below), whose sum is σ = 1417248. Its totient is φ = 269856.

The previous prime is 730973. The next prime is 730993. The reversal of 730990 is 99037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730993) by changing a digit.

730990 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 7 ways as a sum of consecutive naturals, for example, 2682 + ... + 2941.

It is an arithmetic number, because the mean of its divisors is an integer number (88578).

2⁷³⁰⁹⁹⁰ is an apocalyptic number.

730990 is a deficient number, since it is larger than the sum of its proper divisors (686258).

730990 is a wasteful number, since it uses less digits than its factorization.

730990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5643.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 730990 is about 854.9795319187. The cubic root of 730990 is about 90.0818186006.

The spelling of 730990 in words is "seven hundred thirty thousand, nine hundred ninety".