281490036 has 48 divisors (see below), whose sum is σ = 666731520. Its totient is φ = 92423520.

The previous prime is 281490019. The next prime is 281490061. The reversal of 281490036 is 630094182.

281490036 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 281489979 and 281490006.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 270405 + ... + 271443.

It is an arithmetic number, because the mean of its divisors is an integer number (13890240).

Almost surely, 2^281490036 is an apocalyptic number.

It is an amenable number.

281490036 is an abundant number, since it is smaller than the sum of its proper divisors (385241484).

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

281490036 is a wasteful number, since it uses less digits than its factorization.

281490036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 281490036 is about 16777.6647957932. The cubic root of 281490036 is about 655.3716873383.

The spelling of 281490036 in words is "two hundred eighty-one million, four hundred ninety thousand, thirty-six".