11928487 has 2 divisors, whose sum is σ = 11928488. Its totient is φ = 11928486.

The previous prime is 11928473. The next prime is 11928517. The reversal of 11928487 is 78482911.

It is a happy number.

11928487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11928487 - 2⁷ = 11928359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11928437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5964243 + 5964244.

It is an arithmetic number, because the mean of its divisors is an integer number (5964244).

Almost surely, 2^11928487 is an apocalyptic number.

11928487 is a deficient number, since it is larger than the sum of its proper divisors (1).

11928487 is an equidigital number, since it uses as much as digits as its factorization.

11928487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 40.

The square root of 11928487 is about 3453.7641784001. The cubic root of 11928487 is about 228.4871534737.

It can be divided in two parts, 11928 and 487, that multiplied together give a triangular number (5808936 = T₃₄₀₈).

The spelling of 11928487 in words is "eleven million, nine hundred twenty-eight thousand, four hundred eighty-seven".