11900978 has 8 divisors (see below), whose sum is σ = 18144300. Its totient is φ = 5852880.

The previous prime is 11900963. The next prime is 11900989. The reversal of 11900978 is 87900911.

It can be written as a sum of positive squares in 2 ways, for example, as 9778129 + 2122849 = 3127^2 + 1457^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 48653 + ... + 48896.

Almost surely, 2^11900978 is an apocalyptic number.

11900978 is a deficient number, since it is larger than the sum of its proper divisors (6243322).

11900978 is an equidigital number, since it uses as much as digits as its factorization.

11900978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97612.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 11900978 is about 3449.7794132379. The cubic root of 11900978 is about 228.3113756331.

The spelling of 11900978 in words is "eleven million, nine hundred thousand, nine hundred seventy-eight".