11387817 has 32 divisors (see below), whose sum is σ = 19526400. Its totient is φ = 6424704.

The previous prime is 11387797. The next prime is 11387837. The reversal of 11387817 is 71878311.

It is an interprime number because it is at equal distance from previous prime (11387797) and next prime (11387837).

It is not a de Polignac number, because 11387817 - 2¹² = 11383721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11387837) 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 31 ways as a sum of consecutive naturals, for example, 16483 + ... + 17159.

It is an arithmetic number, because the mean of its divisors is an integer number (610200).

Almost surely, 2^11387817 is an apocalyptic number.

It is an amenable number.

11387817 is a deficient number, since it is larger than the sum of its proper divisors (8138583).

11387817 is an equidigital number, since it uses as much as digits as its factorization.

11387817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782 (or 776 counting only the distinct ones).

The product of its digits is 9408, while the sum is 36.

The square root of 11387817 is about 3374.5839743589. The cubic root of 11387817 is about 224.9815095916.

The spelling of 11387817 in words is "eleven million, three hundred eighty-seven thousand, eight hundred seventeen".