11004405 has 16 divisors (see below), whose sum is σ = 17807040. Its totient is φ = 5802368.

The previous prime is 11004397. The next prime is 11004407. The reversal of 11004405 is 50440011.

It is a cyclic number.

It is not a de Polignac number, because 11004405 - 2³ = 11004397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11004407) 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, 2787 + ... + 5456.

It is an arithmetic number, because the mean of its divisors is an integer number (1112940).

Almost surely, 2^11004405 is an apocalyptic number.

11004405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11004405 is a deficient number, since it is larger than the sum of its proper divisors (6802635).

11004405 is an equidigital number, since it uses as much as digits as its factorization.

11004405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8340.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 11004405 is about 3317.2888026218. The cubic root of 11004405 is about 222.4276918596.

Adding to 11004405 its reverse (50440011), we get a palindrome (61444416).

The spelling of 11004405 in words is "eleven million, four thousand, four hundred five".