728590816 has 12 divisors (see below), whose sum is σ = 1434413232. Its totient is φ = 364295392.

The previous prime is 728590813. The next prime is 728590829. The reversal of 728590816 is 618095827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728590813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11384200 + ... + 11384263.

It is an arithmetic number, because the mean of its divisors is an integer number (119534436).

Almost surely, 2^728590816 is an apocalyptic number.

It is an amenable number.

728590816 is a deficient number, since it is larger than the sum of its proper divisors (705822416).

728590816 is a wasteful number, since it uses less digits than its factorization.

728590816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22768473 (or 22768465 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 728590816 is about 26992.4214549195. The cubic root of 728590816 is about 899.8315800076.

The spelling of 728590816 in words is "seven hundred twenty-eight million, five hundred ninety thousand, eight hundred sixteen".