728355669078 has 32 divisors (see below), whose sum is σ = 1520109259776. Its totient is φ = 232219772928.

The previous prime is 728355669073. The next prime is 728355669127. The reversal of 728355669078 is 870966553827.

It is a super-2 number, since 2×728355669078² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728355669071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3744726 + ... + 3934422.

It is an arithmetic number, because the mean of its divisors is an integer number (47503414368).

Almost surely, 2^728355669078 is an apocalyptic number.

728355669078 is an abundant number, since it is smaller than the sum of its proper divisors (791753590698).

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

728355669078 is a wasteful number, since it uses less digits than its factorization.

728355669078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217548.

The product of its (nonzero) digits is 152409600, while the sum is 66.

The spelling of 728355669078 in words is "seven hundred twenty-eight billion, three hundred fifty-five million, six hundred sixty-nine thousand, seventy-eight".