11413815 has 48 divisors (see below), whose sum is σ = 21718368. Its totient is φ = 5101824.

The previous prime is 11413811. The next prime is 11413823. The reversal of 11413815 is 51831411.

It is not a de Polignac number, because 11413815 - 2² = 11413811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11413811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38809 + ... + 39101.

It is an arithmetic number, because the mean of its divisors is an integer number (452466).

Almost surely, 2^11413815 is an apocalyptic number.

11413815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11413815 is a deficient number, since it is larger than the sum of its proper divisors (10304553).

11413815 is a wasteful number, since it uses less digits than its factorization.

11413815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 361 counting only the distinct ones).

The product of its digits is 480, while the sum is 24.

The square root of 11413815 is about 3378.4338087345. The cubic root of 11413815 is about 225.1525878544.

The spelling of 11413815 in words is "eleven million, four hundred thirteen thousand, eight hundred fifteen".