11469978 has 32 divisors (see below), whose sum is σ = 27451200. Its totient is φ = 3529008.

The previous prime is 11469971. The next prime is 11469989. The reversal of 11469978 is 87996411.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11469971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7468 + ... + 8871.

It is an arithmetic number, because the mean of its divisors is an integer number (857850).

Almost surely, 2^11469978 is an apocalyptic number.

11469978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11469978 is an abundant number, since it is smaller than the sum of its proper divisors (15981222).

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

11469978 is a wasteful number, since it uses less digits than its factorization.

11469978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16363 (or 16357 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 11469978 is about 3386.7355964114. The cubic root of 11469978 is about 225.5212802535.

The spelling of 11469978 in words is "eleven million, four hundred sixty-nine thousand, nine hundred seventy-eight".