281880016 has 20 divisors (see below), whose sum is σ = 595792224. Its totient is φ = 128127200.

The previous prime is 281879987. The next prime is 281880017. The reversal of 281880016 is 610088182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281880017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800620 + ... + 800971.

Almost surely, 2^281880016 is an apocalyptic number.

It is an amenable number.

281880016 is an abundant number, since it is smaller than the sum of its proper divisors (313912208).

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

281880016 is a wasteful number, since it uses less digits than its factorization.

281880016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601610 (or 1601604 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 281880016 is about 16789.2827720543. The cubic root of 281880016 is about 655.6742011990.

The spelling of 281880016 in words is "two hundred eighty-one million, eight hundred eighty thousand, sixteen".