8280917281 has 16 divisors (see below), whose sum is σ = 10194722944. Its totient is φ = 6550118784.

The previous prime is 8280917273. The next prime is 8280917297. The reversal of 8280917281 is 1827190828.

It is a cyclic number.

It is not a de Polignac number, because 8280917281 - 2³ = 8280917273 is a prime.

It is a super-2 number, since 2×8280917281² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8280917681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386605 + ... + 407461.

It is an arithmetic number, because the mean of its divisors is an integer number (637170184).

Almost surely, 2^8280917281 is an apocalyptic number.

It is an amenable number.

8280917281 is a deficient number, since it is larger than the sum of its proper divisors (1913805663).

8280917281 is a wasteful number, since it uses less digits than its factorization.

8280917281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25240.

The product of its (nonzero) digits is 129024, while the sum is 46.

The square root of 8280917281 is about 90999.5454988650. The cubic root of 8280917281 is about 2023.1409880752.

The spelling of 8280917281 in words is "eight billion, two hundred eighty million, nine hundred seventeen thousand, two hundred eighty-one".