728244100 has 36 divisors (see below), whose sum is σ = 1585343844. Its totient is φ = 290366080.

The previous prime is 728244071. The next prime is 728244109. The reversal of 728244100 is 1442827.

It can be written as a sum of positive squares in 6 ways, for example, as 100040004 + 628204096 = 10002^2 + 25064^2 .

It is not an unprimeable number, because it can be changed into a prime (728244109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20214 + ... + 43186.

It is an arithmetic number, because the mean of its divisors is an integer number (44037329).

Almost surely, 2^728244100 is an apocalyptic number.

It is an amenable number.

728244100 is an abundant number, since it is smaller than the sum of its proper divisors (857099744).

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

728244100 is a wasteful number, since it uses less digits than its factorization.

728244100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23304 (or 23297 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 728244100 is about 26985.9982212999. The cubic root of 728244100 is about 899.6888224630.

Adding to 728244100 its reverse (1442827), we get a palindrome (729686927).

The spelling of 728244100 in words is "seven hundred twenty-eight million, two hundred forty-four thousand, one hundred".