280530472 has 8 divisors (see below), whose sum is σ = 525994650. Its totient is φ = 140265232.

The previous prime is 280530469. The next prime is 280530493. The reversal of 280530472 is 274035082.

It can be written as a sum of positive squares in only one way, i.e., 162460516 + 118069956 = 12746^2 + 10866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17533147 + ... + 17533162.

Almost surely, 2^280530472 is an apocalyptic number.

It is an amenable number.

280530472 is a deficient number, since it is larger than the sum of its proper divisors (245464178).

280530472 is a wasteful number, since it uses less digits than its factorization.

280530472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35066315 (or 35066311 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 280530472 is about 16749.0439130119. The cubic root of 280530472 is about 654.6261464259.

The spelling of 280530472 in words is "two hundred eighty million, five hundred thirty thousand, four hundred seventy-two".