728477812400 has 90 divisors (see below), whose sum is σ = 1895152446900. Its totient is φ = 268976398080.

The previous prime is 728477812397. The next prime is 728477812417. The reversal of 728477812400 is 4218774827.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5320550 + ... + 5455749.

It is an arithmetic number, because the mean of its divisors is an integer number (21057249410).

Almost surely, 2^728477812400 is an apocalyptic number.

It is an amenable number.

728477812400 is an abundant number, since it is smaller than the sum of its proper divisors (1166674634500).

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

728477812400 is a wasteful number, since it uses less digits than its factorization.

728477812400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10776343 (or 10776319 counting only the distinct ones).

The product of its (nonzero) digits is 1404928, while the sum is 50.

The spelling of 728477812400 in words is "seven hundred twenty-eight billion, four hundred seventy-seven million, eight hundred twelve thousand, four hundred".