100489728 has 40 divisors (see below), whose sum is σ = 267715008. Its totient is φ = 33496064.

The previous prime is 100489723. The next prime is 100489733. The reversal of 100489728 is 827984001.

It is an interprime number because it is at equal distance from previous prime (100489723) and next prime (100489733).

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (100489721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31176 + ... + 34247.

Almost surely, 2^100489728 is an apocalyptic number.

It is an amenable number.

100489728 is an abundant number, since it is smaller than the sum of its proper divisors (167225280).

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

100489728 is an frugal number, since it uses more digits than its factorization.

100489728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65444 (or 65428 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 100489728 is about 10024.4564939951. The cubic root of 100489728 is about 464.9153551559.

The spelling of 100489728 in words is "one hundred million, four hundred eighty-nine thousand, seven hundred twenty-eight".