104947281 has 24 divisors (see below), whose sum is σ = 157121640. Its totient is φ = 67447296.

The previous prime is 104947277. The next prime is 104947291. The reversal of 104947281 is 182749401.

104947281 is a `hidden beast` number, since 104 + 9 + 472 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12960000 + 91987281 = 3600^2 + 9591^2 .

It is not a de Polignac number, because 104947281 - 2² = 104947277 is a prime.

It is a super-2 number, since 2×104947281² = 22027863578585922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (104947231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36235 + ... + 39023.

It is an arithmetic number, because the mean of its divisors is an integer number (6546735).

Almost surely, 2^104947281 is an apocalyptic number.

It is an amenable number.

104947281 is a deficient number, since it is larger than the sum of its proper divisors (52174359).

104947281 is a wasteful number, since it uses less digits than its factorization.

104947281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945 (or 2942 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 104947281 is about 10244.3780191869. The cubic root of 104947281 is about 471.6904285886.

The spelling of 104947281 in words is "one hundred four million, nine hundred forty-seven thousand, two hundred eighty-one".