11978626 has 16 divisors (see below), whose sum is σ = 20633760. Its totient is φ = 5158080.

The previous prime is 11978621. The next prime is 11978641. The reversal of 11978626 is 62687911.

11978626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11978621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13911 + ... + 14746.

It is an arithmetic number, because the mean of its divisors is an integer number (1289610).

Almost surely, 2^11978626 is an apocalyptic number.

11978626 is a deficient number, since it is larger than the sum of its proper divisors (8655134).

11978626 is a wasteful number, since it uses less digits than its factorization.

11978626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28689.

The product of its digits is 36288, while the sum is 40.

The square root of 11978626 is about 3461.0151689931. The cubic root of 11978626 is about 228.8068392702.

The spelling of 11978626 in words is "eleven million, nine hundred seventy-eight thousand, six hundred twenty-six".