280507012 has 6 divisors (see below), whose sum is σ = 490887278. Its totient is φ = 140253504.

The previous prime is 280507009. The next prime is 280507043. The reversal of 280507012 is 210705082.

It can be written as a sum of positive squares in only one way, i.e., 161391616 + 119115396 = 12704^2 + 10914^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35063373 + ... + 35063380.

Almost surely, 2^280507012 is an apocalyptic number.

It is an amenable number.

280507012 is a deficient number, since it is larger than the sum of its proper divisors (210380266).

280507012 is a wasteful number, since it uses less digits than its factorization.

280507012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70126757 (or 70126755 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 280507012 is about 16748.3435598868. The cubic root of 280507012 is about 654.6078977161.

It can be divided in two parts, 2805070 and 12, that added together give a palindrome (2805082).

The spelling of 280507012 in words is "two hundred eighty million, five hundred seven thousand, twelve".