730078731 has 24 divisors (see below), whose sum is σ = 1089523440. Its totient is φ = 483178176.

The previous prime is 730078717. The next prime is 730078733. The reversal of 730078731 is 137870037.

It is a happy number.

It is not a de Polignac number, because 730078731 - 2¹⁵ = 730045963 is a prime.

It is a super-2 number, since 2×730078731² = 1066029906917140722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (730078733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 664975 + ... + 666071.

It is an arithmetic number, because the mean of its divisors is an integer number (45396810).

Almost surely, 2^730078731 is an apocalyptic number.

730078731 is a deficient number, since it is larger than the sum of its proper divisors (359444709).

730078731 is a wasteful number, since it uses less digits than its factorization.

730078731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 730078731 is about 27019.9691154524. The cubic root of 730078731 is about 900.4437034388.

The spelling of 730078731 in words is "seven hundred thirty million, seventy-eight thousand, seven hundred thirty-one".