7280863305 has 32 divisors (see below), whose sum is σ = 11707766784. Its totient is φ = 3863718336.

The previous prime is 7280863301. The next prime is 7280863307. The reversal of 7280863305 is 5033680827.

It is not a de Polignac number, because 7280863305 - 2² = 7280863301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7280863301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3054144 + ... + 3056526.

It is an arithmetic number, because the mean of its divisors is an integer number (365867712).

Almost surely, 2^7280863305 is an apocalyptic number.

It is an amenable number.

7280863305 is a deficient number, since it is larger than the sum of its proper divisors (4426903479).

7280863305 is a wasteful number, since it uses less digits than its factorization.

7280863305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 7280863305 is about 85327.9749261636. The cubic root of 7280863305 is about 1938.1808242383.

The spelling of 7280863305 in words is "seven billion, two hundred eighty million, eight hundred sixty-three thousand, three hundred five".