11978136 has 24 divisors (see below), whose sum is σ = 32440980. Its totient is φ = 3992688.

The previous prime is 11978129. The next prime is 11978137. The reversal of 11978136 is 63187911.

11978136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11978136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11978137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83110 + ... + 83253.

Almost surely, 2^11978136 is an apocalyptic number.

It is an amenable number.

11978136 is an abundant number, since it is smaller than the sum of its proper divisors (20462844).

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

11978136 is a wasteful number, since it uses less digits than its factorization.

11978136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166375 (or 166368 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 11978136 is about 3460.9443797900. The cubic root of 11978136 is about 228.8037193553.

The spelling of 11978136 in words is "eleven million, nine hundred seventy-eight thousand, one hundred thirty-six".