8281385 has 32 divisors (see below), whose sum is σ = 12096000. Its totient is φ = 5322240.

The previous prime is 8281381. The next prime is 8281387. The reversal of 8281385 is 5831828.

It is not a de Polignac number, because 8281385 - 2² = 8281381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8281381) 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, 41516 + ... + 41714.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 2^8281385 is an apocalyptic number.

It is an amenable number.

8281385 is a deficient number, since it is larger than the sum of its proper divisors (3814615).

8281385 is a wasteful number, since it uses less digits than its factorization.

8281385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281.

The product of its digits is 15360, while the sum is 35.

The square root of 8281385 is about 2877.7395643108. The cubic root of 8281385 is about 202.3179077401.

The spelling of 8281385 in words is "eight million, two hundred eighty-one thousand, three hundred eighty-five".