280999488 has 224 divisors, whose sum is σ = 942197760. Its totient is φ = 71792640.

The previous prime is 280999483. The next prime is 280999513. The reversal of 280999488 is 884999082.

280999488 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (224).

It is not an unprimeable number, because it can be changed into a prime (280999483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1226958 + ... + 1227186.

It is an arithmetic number, because the mean of its divisors is an integer number (4206240).

Almost surely, 2^280999488 is an apocalyptic number.

280999488 is a gapful number since it is divisible by the number (28) 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 280999488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471098880).

280999488 is an abundant number, since it is smaller than the sum of its proper divisors (661198272).

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

280999488 is a wasteful number, since it uses less digits than its factorization.

280999488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 57.

The square root of 280999488 is about 16763.0393425536. The cubic root of 280999488 is about 654.9907641997.

The spelling of 280999488 in words is "two hundred eighty million, nine hundred ninety-nine thousand, four hundred eighty-eight".