11957738 has 8 divisors (see below), whose sum is σ = 19316388. Its totient is φ = 5518944.

The previous prime is 11957731. The next prime is 11957747. The reversal of 11957738 is 83775911.

It can be written as a sum of positive squares in 2 ways, for example, as 11950849 + 6889 = 3457^2 + 83^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 11957695 and 11957704.

It is not an unprimeable number, because it can be changed into a prime (11957731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229931 + ... + 229982.

Almost surely, 2^11957738 is an apocalyptic number.

11957738 is a deficient number, since it is larger than the sum of its proper divisors (7358650).

11957738 is a wasteful number, since it uses less digits than its factorization.

11957738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459928.

The product of its digits is 52920, while the sum is 41.

The square root of 11957738 is about 3457.9962405995. The cubic root of 11957738 is about 228.6737661902.

The spelling of 11957738 in words is "eleven million, nine hundred fifty-seven thousand, seven hundred thirty-eight".