1009281 has 16 divisors (see below), whose sum is σ = 1656704. Its totient is φ = 532224.

The previous prime is 1009259. The next prime is 1009289. The reversal of 1009281 is 1829001.

1009281 is nontrivially palindromic in base 6.

1009281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1009281 - 2⁷ = 1009153 is a prime.

It is a super-2 number, since 2×1009281² = 2037296273922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (1009289) 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, 1576 + ... + 2121.

It is an arithmetic number, because the mean of its divisors is an integer number (103544).

2^1009281 is an apocalyptic number.

It is an amenable number.

1009281 is a deficient number, since it is larger than the sum of its proper divisors (647423).

1009281 is a wasteful number, since it uses less digits than its factorization.

1009281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1009281 is about 1004.6297825567. The cubic root of 1009281 is about 100.3084144938.

The spelling of 1009281 in words is "one million, nine thousand, two hundred eighty-one".