728243886800 has 30 divisors (see below), whose sum is σ = 1749605938998. Its totient is φ = 291297554560.

The previous prime is 728243886719. The next prime is 728243886803. The reversal of 728243886800 is 8688342827.

It can be written as a sum of positive squares in 3 ways, for example, as 2925944464 + 725317942336 = 54092^2 + 851656^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728243886803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 910304459 + ... + 910305258.

Almost surely, 2^728243886800 is an apocalyptic number.

It is an amenable number.

728243886800 is an abundant number, since it is smaller than the sum of its proper divisors (1021362052198).

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

728243886800 is a wasteful number, since it uses less digits than its factorization.

728243886800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820609735 (or 1820609724 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 56.

The spelling of 728243886800 in words is "seven hundred twenty-eight billion, two hundred forty-three million, eight hundred eighty-six thousand, eight hundred".