2905281 has 8 divisors (see below), whose sum is σ = 4304160. Its totient is φ = 1936836.

The previous prime is 2905267. The next prime is 2905303. The reversal of 2905281 is 1825092.

It is not a de Polignac number, because 2905281 - 2¹⁰ = 2904257 is a prime.

It is a super-2 number, since 2×2905281² = 16881315377922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 107603 = 2905281 / (2 + 9 + 0 + 5 + 2 + 8 + 1).

It is not an unprimeable number, because it can be changed into a prime (2905241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53775 + ... + 53828.

It is an arithmetic number, because the mean of its divisors is an integer number (538020).

2^2905281 is an apocalyptic number.

It is an amenable number.

2905281 is a deficient number, since it is larger than the sum of its proper divisors (1398879).

2905281 is a wasteful number, since it uses less digits than its factorization.

2905281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107612 (or 107606 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2905281 is about 1704.4884863207. The cubic root of 2905281 is about 142.6908246811.

The spelling of 2905281 in words is "two million, nine hundred five thousand, two hundred eighty-one".