280472477 has 6 divisors (see below), whose sum is σ = 297941658. Its totient is φ = 263973824.

The previous prime is 280472473. The next prime is 280472503. The reversal of 280472477 is 774274082.

It can be written as a sum of positive squares in 3 ways, for example, as 122190916 + 158281561 = 11054^2 + 12581^2 .

It is not a de Polignac number, because 280472477 - 2² = 280472473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280472473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 484958 + ... + 485535.

It is an arithmetic number, because the mean of its divisors is an integer number (49656943).

Almost surely, 2^280472477 is an apocalyptic number.

It is an amenable number.

280472477 is a deficient number, since it is larger than the sum of its proper divisors (17469181).

280472477 is an equidigital number, since it uses as much as digits as its factorization.

280472477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970527 (or 970510 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 41.

The square root of 280472477 is about 16747.3125306719. The cubic root of 280472477 is about 654.5810323014.

The spelling of 280472477 in words is "two hundred eighty million, four hundred seventy-two thousand, four hundred seventy-seven".