11812970 has 32 divisors (see below), whose sum is σ = 23178960. Its totient is φ = 4308480.

The previous prime is 11812963. The next prime is 11812981. The reversal of 11812970 is 7921811.

It is a Cunningham number, because it is equal to 3437²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1745041 + 10067929 = 1321^2 + 3173^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11060 + ... + 12080.

Almost surely, 2^11812970 is an apocalyptic number.

11812970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11812970 is a deficient number, since it is larger than the sum of its proper divisors (11365990).

11812970 is a wasteful number, since it uses less digits than its factorization.

11812970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 11812970 is about 3437.0001454757. Note that the first 3 decimals coincide. The cubic root of 11812970 is about 227.7471933730.

The spelling of 11812970 in words is "eleven million, eight hundred twelve thousand, nine hundred seventy".