728548407 has 12 divisors (see below), whose sum is σ = 1107734680. Its totient is φ = 460135728.

The previous prime is 728548399. The next prime is 728548417. The reversal of 728548407 is 704845827.

It is not a de Polignac number, because 728548407 - 2³ = 728548399 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 (728548417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2130088 + ... + 2130429.

Almost surely, 2^728548407 is an apocalyptic number.

728548407 is a deficient number, since it is larger than the sum of its proper divisors (379186273).

728548407 is a wasteful number, since it uses less digits than its factorization.

728548407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260542 (or 4260539 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The square root of 728548407 is about 26991.6358711361. The cubic root of 728548407 is about 899.8141208718.

The spelling of 728548407 in words is "seven hundred twenty-eight million, five hundred forty-eight thousand, four hundred seven".