280704966 has 16 divisors (see below), whose sum is σ = 565697088. Its totient is φ = 92853800.

The previous prime is 280704953. The next prime is 280704967. The reversal of 280704966 is 669407082.

280704966 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×280704966² = 157590555874122312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280704967) 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, 177780 + ... + 179351.

It is an arithmetic number, because the mean of its divisors is an integer number (35356068).

Almost surely, 2^280704966 is an apocalyptic number.

280704966 is an abundant number, since it is smaller than the sum of its proper divisors (284992122).

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

280704966 is a wasteful number, since it uses less digits than its factorization.

280704966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357267.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 280704966 is about 16754.2521766864. The cubic root of 280704966 is about 654.7618472623.

The spelling of 280704966 in words is "two hundred eighty million, seven hundred four thousand, nine hundred sixty-six".