9728161400 has 24 divisors (see below), whose sum is σ = 22617975720. Its totient is φ = 3891264480.

The previous prime is 9728161381. The next prime is 9728161439. The reversal of 9728161400 is 41618279.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24320204 + ... + 24320603.

It is an arithmetic number, because the mean of its divisors is an integer number (942415655).

Almost surely, 2^9728161400 is an apocalyptic number.

It is an amenable number.

9728161400 is an abundant number, since it is smaller than the sum of its proper divisors (12889814320).

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

9728161400 is a wasteful number, since it uses less digits than its factorization.

9728161400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48640823 (or 48640814 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 9728161400 is about 98631.4422484027. The cubic root of 9728161400 is about 2134.7331248340.

Adding to 9728161400 its reverse (41618279), we get a palindrome (9769779679).

It can be divided in two parts, 9728161 and 400, that multiplied together give a square (3891264400 = 62380²).

The spelling of 9728161400 in words is "nine billion, seven hundred twenty-eight million, one hundred sixty-one thousand, four hundred".