11487945 has 32 divisors (see below), whose sum is σ = 21581568. Its totient is φ = 5107968.

The previous prime is 11487941. The next prime is 11487967. The reversal of 11487945 is 54978411.

It is not a de Polignac number, because 11487945 - 2² = 11487941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11487941) 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, 2407 + ... + 5363.

It is an arithmetic number, because the mean of its divisors is an integer number (674424).

Almost surely, 2^11487945 is an apocalyptic number.

11487945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11487945 is a deficient number, since it is larger than the sum of its proper divisors (10093623).

11487945 is a wasteful number, since it uses less digits than its factorization.

11487945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3009.

The product of its digits is 40320, while the sum is 39.

The square root of 11487945 is about 3389.3871127388. The cubic root of 11487945 is about 225.6389737945.

The spelling of 11487945 in words is "eleven million, four hundred eighty-seven thousand, nine hundred forty-five".