10813905 has 20 divisors (see below), whose sum is σ = 19385652. Its totient is φ = 5767200.

The previous prime is 10813889. The next prime is 10813931. The reversal of 10813905 is 50931801.

It can be written as a sum of positive squares in 2 ways, for example, as 2099601 + 8714304 = 1449^2 + 2952^2 .

It is not a de Polignac number, because 10813905 - 2⁴ = 10813889 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12946 + ... + 13755.

Almost surely, 2^10813905 is an apocalyptic number.

10813905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10813905 is a deficient number, since it is larger than the sum of its proper divisors (8571747).

10813905 is an equidigital number, since it uses as much as digits as its factorization.

10813905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26718 (or 26709 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 10813905 is about 3288.4502428956. The cubic root of 10813905 is about 221.1367130462.

The spelling of 10813905 in words is "ten million, eight hundred thirteen thousand, nine hundred five".