11972690 has 8 divisors (see below), whose sum is σ = 21550860. Its totient is φ = 4789072.

The previous prime is 11972683. The next prime is 11972711. The reversal of 11972690 is 9627911.

It can be written as a sum of positive squares in 2 ways, for example, as 10259209 + 1713481 = 3203^2 + 1309^2 .

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

It is a super-2 number, since 2×11972690² = 286690611672200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11972690.

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, 598625 + ... + 598644.

Almost surely, 2^11972690 is an apocalyptic number.

11972690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11972690 is a deficient number, since it is larger than the sum of its proper divisors (9578170).

11972690 is a wasteful number, since it uses less digits than its factorization.

11972690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197276.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 11972690 is about 3460.1575108657. The cubic root of 11972690 is about 228.7690380006.

The spelling of 11972690 in words is "eleven million, nine hundred seventy-two thousand, six hundred ninety".