730038991 has 8 divisors (see below), whose sum is σ = 796605264. Its totient is φ = 663505920.

The previous prime is 730038943. The next prime is 730039043. The reversal of 730038991 is 199830037.

730038991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 730038991 - 2¹⁹ = 729514703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730038941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69135 + ... + 78991.

It is an arithmetic number, because the mean of its divisors is an integer number (99575658).

Almost surely, 2^730038991 is an apocalyptic number.

730038991 is a deficient number, since it is larger than the sum of its proper divisors (66566273).

730038991 is a wasteful number, since it uses less digits than its factorization.

730038991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16601.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 730038991 is about 27019.2337234053. The cubic root of 730038991 is about 900.4273653460.

The spelling of 730038991 in words is "seven hundred thirty million, thirty-eight thousand, nine hundred ninety-one".