280937472 has 88 divisors (see below), whose sum is σ = 756571200. Its totient is φ = 92676096.

The previous prime is 280937467. The next prime is 280937473. The reversal of 280937472 is 274739082.

It is not an unprimeable number, because it can be changed into a prime (280937473) 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, 334429 + ... + 335267.

It is an arithmetic number, because the mean of its divisors is an integer number (8597400).

Almost surely, 2^280937472 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 280937472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378285600).

280937472 is an abundant number, since it is smaller than the sum of its proper divisors (475633728).

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

280937472 is a wasteful number, since it uses less digits than its factorization.

280937472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 280937472 is about 16761.1894565988. The cubic root of 280937472 is about 654.9425756234.

The spelling of 280937472 in words is "two hundred eighty million, nine hundred thirty-seven thousand, four hundred seventy-two".