281551872 has 88 divisors (see below), whose sum is σ = 857709376. Its totient is φ = 80437248.

The previous prime is 281551871. The next prime is 281551873. The reversal of 281551872 is 278155182.

281551872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (281551871) and next prime (281551873).

It is a self number, because there is not a number n which added to its sum of digits gives 281551872.

It is not an unprimeable number, because it can be changed into a prime (281551871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14958 + ... + 28050.

Almost surely, 2^281551872 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 281551872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428854688).

281551872 is an abundant number, since it is smaller than the sum of its proper divisors (576157504).

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

281551872 is a wasteful number, since it uses less digits than its factorization.

281551872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13123 (or 13105 counting only the distinct ones).

The product of its digits is 44800, while the sum is 39.

The square root of 281551872 is about 16779.5075017117. The cubic root of 281551872 is about 655.4196731654.

The spelling of 281551872 in words is "two hundred eighty-one million, five hundred fifty-one thousand, eight hundred seventy-two".