10408581 has 40 divisors (see below), whose sum is σ = 16773504. Its totient is φ = 6415200.

The previous prime is 10408577. The next prime is 10408583. The reversal of 10408581 is 18580401.

10408581 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 10408581 - 2² = 10408577 is a prime.

It is a super-2 number, since 2×10408581² = 216677116867122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10408583) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 68856 + ... + 69006.

Almost surely, 2^10408581 is an apocalyptic number.

10408581 is the 1863-rd octagonal number.

It is an amenable number.

10408581 is a deficient number, since it is larger than the sum of its proper divisors (6364923).

10408581 is a wasteful number, since it uses less digits than its factorization.

10408581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 10408581 is about 3226.2332525718. The cubic root of 10408581 is about 218.3385937133.

Adding to 10408581 its reverse (18580401), we get a palindrome (28988982).

The spelling of 10408581 in words is "ten million, four hundred eight thousand, five hundred eighty-one".