280066374 has 48 divisors (see below), whose sum is σ = 698530560. Its totient is φ = 79438320.

The previous prime is 280066349. The next prime is 280066393. The reversal of 280066374 is 473660082.

280066374 is a `hidden beast` number, since 280 + 0 + 6 + 6 + 374 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9519 + ... + 25509.

It is an arithmetic number, because the mean of its divisors is an integer number (14552720).

Almost surely, 2^280066374 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280066374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349265280).

280066374 is an abundant number, since it is smaller than the sum of its proper divisors (418464186).

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

280066374 is a wasteful number, since it uses less digits than its factorization.

280066374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16145 (or 16142 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 280066374 is about 16735.1837157529. The cubic root of 280066374 is about 654.2649517048.

The spelling of 280066374 in words is "two hundred eighty million, sixty-six thousand, three hundred seventy-four".