11887542 has 24 divisors (see below), whose sum is σ = 26143416. Its totient is φ = 3902976.

The previous prime is 11887541. The next prime is 11887543. The reversal of 11887542 is 24578811.

It is an interprime number because it is at equal distance from previous prime (11887541) and next prime (11887543).

It is a junction number, because it is equal to n+sod(n) for n = 11887497 and 11887506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11887541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3723 + ... + 6134.

It is an arithmetic number, because the mean of its divisors is an integer number (1089309).

Almost surely, 2^11887542 is an apocalyptic number.

11887542 is an abundant number, since it is smaller than the sum of its proper divisors (14255874).

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

11887542 is a wasteful number, since it uses less digits than its factorization.

11887542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9932 (or 9929 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 11887542 is about 3447.8314924021. The cubic root of 11887542 is about 228.2254234033.

The spelling of 11887542 in words is "eleven million, eight hundred eighty-seven thousand, five hundred forty-two".