280880970 has 64 divisors (see below), whose sum is σ = 723914496. Its totient is φ = 69493760.

The previous prime is 280880927. The next prime is 280880993. The reversal of 280880970 is 79088082.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32332 + ... + 40088.

It is an arithmetic number, because the mean of its divisors is an integer number (11311164).

Almost surely, 2^280880970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280880970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361957248).

280880970 is an abundant number, since it is smaller than the sum of its proper divisors (443033526).

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

280880970 is a wasteful number, since it uses less digits than its factorization.

280880970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7855.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 280880970 is about 16759.5038709384. The cubic root of 280880970 is about 654.8986654415.

The spelling of 280880970 in words is "two hundred eighty million, eight hundred eighty thousand, nine hundred seventy".