11487918 has 32 divisors (see below), whose sum is σ = 25546752. Its totient is φ = 3420000.

The previous prime is 11487911. The next prime is 11487941. The reversal of 11487918 is 81978411.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11487911) 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, 43 + ... + 4793.

It is an arithmetic number, because the mean of its divisors is an integer number (798336).

Almost surely, 2^11487918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11487918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12773376).

11487918 is an abundant number, since it is smaller than the sum of its proper divisors (14058834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11487918 is a wasteful number, since it uses less digits than its factorization.

11487918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800.

The product of its digits is 16128, while the sum is 39.

The square root of 11487918 is about 3389.3831297155. The cubic root of 11487918 is about 225.6387970221.

The spelling of 11487918 in words is "eleven million, four hundred eighty-seven thousand, nine hundred eighteen".