245280987 has 32 divisors (see below), whose sum is σ = 424962560. Its totient is φ = 136896480.

The previous prime is 245280977. The next prime is 245281031. The reversal of 245280987 is 789082542.

It is not a de Polignac number, because 245280987 - 2⁶ = 245280923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245280967) 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 31 ways as a sum of consecutive naturals, for example, 6964 + ... + 23217.

It is an arithmetic number, because the mean of its divisors is an integer number (13280080).

Almost surely, 2^245280987 is an apocalyptic number.

245280987 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

245280987 is a deficient number, since it is larger than the sum of its proper divisors (179681573).

245280987 is a wasteful number, since it uses less digits than its factorization.

245280987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30240 (or 30234 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 245280987 is about 15661.4490708874. The cubic root of 245280987 is about 625.9715977206.

The spelling of 245280987 in words is "two hundred forty-five million, two hundred eighty thousand, nine hundred eighty-seven".