11887656 has 64 divisors (see below), whose sum is σ = 33324480. Its totient is φ = 3502080.

The previous prime is 11887643. The next prime is 11887669. The reversal of 11887656 is 65678811.

It is an interprime number because it is at equal distance from previous prime (11887643) and next prime (11887669).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9160 + ... + 10376.

It is an arithmetic number, because the mean of its divisors is an integer number (520695).

Almost surely, 2^11887656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11887656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16662240).

11887656 is an abundant number, since it is smaller than the sum of its proper divisors (21436824).

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

11887656 is a wasteful number, since it uses less digits than its factorization.

11887656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1270 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 11887656 is about 3447.8480244930. The cubic root of 11887656 is about 228.2261529518.

The spelling of 11887656 in words is "eleven million, eight hundred eighty-seven thousand, six hundred fifty-six".