281080000 has 70 divisors (see below), whose sum is σ = 697086236. Its totient is φ = 112416000.

The previous prime is 281079961. The next prime is 281080027. The reversal of 281080000 is 80182.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 281080000.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 36487 + ... + 43513.

Almost surely, 2^281080000 is an apocalyptic number.

281080000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281080000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348543118).

281080000 is an abundant number, since it is smaller than the sum of its proper divisors (416006236).

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

281080000 is an frugal number, since it uses more digits than its factorization.

281080000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7059 (or 7034 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 281080000 is about 16765.4406443732. The cubic root of 281080000 is about 655.0533142315.

The spelling of 281080000 in words is "two hundred eighty-one million, eighty thousand".