281970648 has 48 divisors (see below), whose sum is σ = 764459280. Its totient is φ = 93893184.

The previous prime is 281970641. The next prime is 281970679. The reversal of 281970648 is 846079182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281970641) 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, 114486 + ... + 116922.

It is an arithmetic number, because the mean of its divisors is an integer number (15926235).

Almost surely, 2^281970648 is an apocalyptic number.

It is an amenable number.

281970648 is an abundant number, since it is smaller than the sum of its proper divisors (482488632).

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

281970648 is a wasteful number, since it uses less digits than its factorization.

281970648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056 (or 4049 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 281970648 is about 16791.9816579223. The cubic root of 281970648 is about 655.7444659606.

The spelling of 281970648 in words is "two hundred eighty-one million, nine hundred seventy thousand, six hundred forty-eight".