728598421428 has 48 divisors (see below), whose sum is σ = 1774073508480. Its totient is φ = 232294336384.

The previous prime is 728598421427. The next prime is 728598421429. The reversal of 728598421428 is 824124895827.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (728598421427) and next prime (728598421429).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728598421427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6075826 + ... + 6194582.

It is an arithmetic number, because the mean of its divisors is an integer number (36959864760).

Almost surely, 2^728598421428 is an apocalyptic number.

It is an amenable number.

728598421428 is an abundant number, since it is smaller than the sum of its proper divisors (1045475087052).

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

728598421428 is a wasteful number, since it uses less digits than its factorization.

728598421428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141016 (or 141014 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 60.

The spelling of 728598421428 in words is "seven hundred twenty-eight billion, five hundred ninety-eight million, four hundred twenty-one thousand, four hundred twenty-eight".