11969972 has 24 divisors (see below), whose sum is σ = 25349184. Its totient is φ = 4828032.

The previous prime is 11969963. The next prime is 11969987. The reversal of 11969972 is 27996911.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12098 + ... + 13049.

It is an arithmetic number, because the mean of its divisors is an integer number (1056216).

Almost surely, 2^11969972 is an apocalyptic number.

It is an amenable number.

11969972 is an abundant number, since it is smaller than the sum of its proper divisors (13379212).

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

11969972 is a wasteful number, since it uses less digits than its factorization.

11969972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25175 (or 25173 counting only the distinct ones).

The product of its digits is 61236, while the sum is 44.

The square root of 11969972 is about 3459.7647318857. The cubic root of 11969972 is about 228.7517252301.

The spelling of 11969972 in words is "eleven million, nine hundred sixty-nine thousand, nine hundred seventy-two".