730890 has 32 divisors (see below), whose sum is σ = 1949760. Its totient is φ = 194832.

The previous prime is 730889. The next prime is 730901. The reversal of 730890 is 98037.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

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 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (60930).

2⁷³⁰⁸⁹⁰ is an apocalyptic number.

730890 is an abundant number, since it is smaller than the sum of its proper divisors (1218870).

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

730890 is a wasteful number, since it uses less digits than its factorization.

730890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723 (or 2717 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 730890 is about 854.9210489864. The cubic root of 730890 is about 90.0777106591.

The spelling of 730890 in words is "seven hundred thirty thousand, eight hundred ninety".