281100004 has 12 divisors (see below), whose sum is σ = 492307200. Its totient is φ = 140440808.

The previous prime is 281099999. The next prime is 281100007. The reversal of 281100004 is 400001182.

It is a happy number.

281100004 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (281100007) 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, 21364 + ... + 31915.

It is an arithmetic number, because the mean of its divisors is an integer number (41025600).

Almost surely, 2^281100004 is an apocalyptic number.

It is an amenable number.

281100004 is a deficient number, since it is larger than the sum of its proper divisors (211207196).

281100004 is a wasteful number, since it uses less digits than its factorization.

281100004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54602 (or 54600 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 281100004 is about 16766.0372181383. The cubic root of 281100004 is about 655.0688535509.

Adding to 281100004 its reverse (400001182), we get a palindrome (681101186).

The spelling of 281100004 in words is "two hundred eighty-one million, one hundred thousand, four".