728693850 has 24 divisors (see below), whose sum is σ = 1807161120. Its totient is φ = 194318320.

The previous prime is 728693813. The next prime is 728693921. The reversal of 728693850 is 58396827.

It is a self number, because there is not a number n which added to its sum of digits gives 728693850.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2428830 + ... + 2429129.

It is an arithmetic number, because the mean of its divisors is an integer number (75298380).

Almost surely, 2^728693850 is an apocalyptic number.

728693850 is an abundant number, since it is smaller than the sum of its proper divisors (1078467270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728693850 is a wasteful number, since it uses less digits than its factorization.

728693850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857974 (or 4857969 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 728693850 is about 26994.3299601972. The cubic root of 728693850 is about 899.8739947050.

The spelling of 728693850 in words is "seven hundred twenty-eight million, six hundred ninety-three thousand, eight hundred fifty".