728051737 has 4 divisors (see below), whose sum is σ = 832059136. Its totient is φ = 624044340.

The previous prime is 728051717. The next prime is 728051789. The reversal of 728051737 is 737150827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 737150827 = 7 ⋅105307261.

It is a cyclic number.

It is not a de Polignac number, because 728051737 - 2²³ = 719663129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 728051737.

It is not an unprimeable number, because it can be changed into a prime (728051717) 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 3 ways as a sum of consecutive naturals, for example, 52003689 + ... + 52003702.

It is an arithmetic number, because the mean of its divisors is an integer number (208014784).

Almost surely, 2^728051737 is an apocalyptic number.

It is an amenable number.

728051737 is a deficient number, since it is larger than the sum of its proper divisors (104007399).

728051737 is a wasteful number, since it uses less digits than its factorization.

728051737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104007398.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 728051737 is about 26982.4338598281. The cubic root of 728051737 is about 899.6095989895.

The spelling of 728051737 in words is "seven hundred twenty-eight million, fifty-one thousand, seven hundred thirty-seven".