11630978 has 4 divisors (see below), whose sum is σ = 17446470. Its totient is φ = 5815488.

The previous prime is 11630947. The next prime is 11630989. The reversal of 11630978 is 87903611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8543929 + 3087049 = 2923^2 + 1757^2 .

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 as a sum of consecutive naturals, namely, 2907743 + ... + 2907746.

Almost surely, 2^11630978 is an apocalyptic number.

11630978 is a deficient number, since it is larger than the sum of its proper divisors (5815492).

11630978 is an equidigital number, since it uses as much as digits as its factorization.

11630978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5815491.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 11630978 is about 3410.4219680268. The cubic root of 11630978 is about 226.5715686231.

The spelling of 11630978 in words is "eleven million, six hundred thirty thousand, nine hundred seventy-eight".