728971901 has 8 divisors (see below), whose sum is σ = 839471424. Its totient is φ = 620062560.

The previous prime is 728971861. The next prime is 728971907. The reversal of 728971901 is 109179827.

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

It is a cyclic number.

It is not a de Polignac number, because 728971901 - 2¹⁴ = 728955517 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 (728971907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396560 + ... + 398393.

It is an arithmetic number, because the mean of its divisors is an integer number (104933928).

Almost surely, 2^728971901 is an apocalyptic number.

It is an amenable number.

728971901 is a deficient number, since it is larger than the sum of its proper divisors (110499523).

728971901 is a wasteful number, since it uses less digits than its factorization.

728971901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795091.

The product of its (nonzero) digits is 63504, while the sum is 44.

The square root of 728971901 is about 26999.4796431339. The cubic root of 728971901 is about 899.9884364769.

The spelling of 728971901 in words is "seven hundred twenty-eight million, nine hundred seventy-one thousand, nine hundred one".