281008896 has 144 divisors (see below), whose sum is σ = 862600704. Its totient is φ = 79552512.

The previous prime is 281008891. The next prime is 281008919. The reversal of 281008896 is 698800182.

It is a super-2 number, since 2×281008896² = 157931999262277632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (281008891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 897636 + ... + 897948.

Almost surely, 2^281008896 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 281008896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431300352).

281008896 is an abundant number, since it is smaller than the sum of its proper divisors (581591808).

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

281008896 is a wasteful number, since it uses less digits than its factorization.

281008896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 281008896 is about 16763.3199575740. The cubic root of 281008896 is about 654.9980739217.

The spelling of 281008896 in words is "two hundred eighty-one million, eight thousand, eight hundred ninety-six".