728093953 has 4 divisors (see below), whose sum is σ = 728161348. Its totient is φ = 728026560.

The previous prime is 728093909. The next prime is 728093963. The reversal of 728093953 is 359390827.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 359390827 = 53 ⋅6780959.

It can be written as a sum of positive squares in 2 ways, for example, as 387026929 + 341067024 = 19673^2 + 18468^2 .

It is a cyclic number.

It is not a de Polignac number, because 728093953 - 2⁹ = 728093441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728093963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13428 + ... + 40453.

It is an arithmetic number, because the mean of its divisors is an integer number (182040337).

Almost surely, 2^728093953 is an apocalyptic number.

It is an amenable number.

728093953 is a deficient number, since it is larger than the sum of its proper divisors (67395).

728093953 is a wasteful number, since it uses less digits than its factorization.

728093953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67394.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 728093953 is about 26983.2161352201. The cubic root of 728093953 is about 899.6269865747.

It can be divided in two parts, 72 and 8093953, that added together give a square (8094025 = 2845²).

The spelling of 728093953 in words is "seven hundred twenty-eight million, ninety-three thousand, nine hundred fifty-three".