11928641 has 2 divisors, whose sum is σ = 11928642. Its totient is φ = 11928640.

The previous prime is 11928589. The next prime is 11928649. The reversal of 11928641 is 14682911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11082241 + 846400 = 3329^2 + 920^2 .

It is an emirp because it is prime and its reverse (14682911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11928641 is a prime.

It is a super-2 number, since 2×11928641² = 284584952213762, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11928598 and 11928607.

It is not a weakly prime, because it can be changed into another prime (11928649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5964320 + 5964321.

It is an arithmetic number, because the mean of its divisors is an integer number (5964321).

Almost surely, 2^11928641 is an apocalyptic number.

It is an amenable number.

11928641 is a deficient number, since it is larger than the sum of its proper divisors (1).

11928641 is an equidigital number, since it uses as much as digits as its factorization.

11928641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 32.

The square root of 11928641 is about 3453.7864728440. The cubic root of 11928641 is about 228.4881367465.

The spelling of 11928641 in words is "eleven million, nine hundred twenty-eight thousand, six hundred forty-one".