11978075 has 24 divisors (see below), whose sum is σ = 15832320. Its totient is φ = 8964000.

The previous prime is 11978069. The next prime is 11978077. The reversal of 11978075 is 57087911.

It is not a de Polignac number, because 11978075 - 2¹² = 11973979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11978077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71642 + ... + 71808.

It is an arithmetic number, because the mean of its divisors is an integer number (659680).

Almost surely, 2^11978075 is an apocalyptic number.

11978075 is a deficient number, since it is larger than the sum of its proper divisors (3854245).

11978075 is a wasteful number, since it uses less digits than its factorization.

11978075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 11978075 is about 3460.9355671552. The cubic root of 11978075 is about 228.8033309518.

The spelling of 11978075 in words is "eleven million, nine hundred seventy-eight thousand, seventy-five".