728024047 has 4 divisors (see below), whose sum is σ = 728092096. Its totient is φ = 727956000.

The previous prime is 728024029. The next prime is 728024051. The reversal of 728024047 is 740420827.

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: 740420827 = 43 ⋅17219089.

It is a cyclic number.

It is not a de Polignac number, because 728024047 - 2¹¹ = 728021999 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 (728024147) 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, 14079 + ... + 40672.

It is an arithmetic number, because the mean of its divisors is an integer number (182023024).

Almost surely, 2^728024047 is an apocalyptic number.

728024047 is a deficient number, since it is larger than the sum of its proper divisors (68049).

728024047 is a wasteful number, since it uses less digits than its factorization.

728024047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68048.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 728024047 is about 26981.9207433422. The cubic root of 728024047 is about 899.5981938909.

The spelling of 728024047 in words is "seven hundred twenty-eight million, twenty-four thousand, forty-seven".