728288578 has 16 divisors (see below), whose sum is σ = 1105125120. Its totient is φ = 359926000.

The previous prime is 728288569. The next prime is 728288579. The reversal of 728288578 is 875882827.

It is not an unprimeable number, because it can be changed into a prime (728288579) 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, 130383 + ... + 135853.

It is an arithmetic number, because the mean of its divisors is an integer number (69070320).

Almost surely, 2^728288578 is an apocalyptic number.

728288578 is a deficient number, since it is larger than the sum of its proper divisors (376836542).

728288578 is a wasteful number, since it uses less digits than its factorization.

728288578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6233.

The product of its digits is 4014080, while the sum is 55.

The square root of 728288578 is about 26986.8223027462. The cubic root of 728288578 is about 899.7071384575.

It can be divided in two parts, 72828 and 8578, that added together give a triangular number (81406 = T₄₀₃).

The spelling of 728288578 in words is "seven hundred twenty-eight million, two hundred eighty-eight thousand, five hundred seventy-eight".