280000963 has 4 divisors (see below), whose sum is σ = 305455608. Its totient is φ = 254546320.

The previous prime is 280000957. The next prime is 280000969. The reversal of 280000963 is 369000082.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (280000957) and next prime (280000969).

It is a cyclic number.

It is not a de Polignac number, because 280000963 - 2⁹ = 280000451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280000969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12727306 + ... + 12727327.

It is an arithmetic number, because the mean of its divisors is an integer number (76363902).

Almost surely, 2^280000963 is an apocalyptic number.

280000963 is a deficient number, since it is larger than the sum of its proper divisors (25454645).

280000963 is a wasteful number, since it uses less digits than its factorization.

280000963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25454644.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 280000963 is about 16733.2293057855. The cubic root of 280000963 is about 654.2140120456.

The spelling of 280000963 in words is "two hundred eighty million, nine hundred sixty-three", and thus it is an aban number.