281630496 has 96 divisors (see below), whose sum is σ = 856614528. Its totient is φ = 79349760.

The previous prime is 281630467. The next prime is 281630509. The reversal of 281630496 is 694036182.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46186 + ... + 51926.

It is an arithmetic number, because the mean of its divisors is an integer number (8923068).

Almost surely, 2^281630496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281630496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428307264).

281630496 is an abundant number, since it is smaller than the sum of its proper divisors (574984032).

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

281630496 is a wasteful number, since it uses less digits than its factorization.

281630496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834 (or 5826 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 281630496 is about 16781.8501959706. The cubic root of 281630496 is about 655.4806766316.

The spelling of 281630496 in words is "two hundred eighty-one million, six hundred thirty thousand, four hundred ninety-six".