28612523 has 2 divisors, whose sum is σ = 28612524. Its totient is φ = 28612522.

The previous prime is 28612517. The next prime is 28612541. The reversal of 28612523 is 32521682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28612523 - 2⁶ = 28612459 is a prime.

It is not a weakly prime, because it can be changed into another prime (28612543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14306261 + 14306262.

It is an arithmetic number, because the mean of its divisors is an integer number (14306262).

Almost surely, 2^28612523 is an apocalyptic number.

28612523 is a deficient number, since it is larger than the sum of its proper divisors (1).

28612523 is an equidigital number, since it uses as much as digits as its factorization.

28612523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 28612523 is about 5349.0674888246. The cubic root of 28612523 is about 305.8572069326.

The spelling of 28612523 in words is "twenty-eight million, six hundred twelve thousand, five hundred twenty-three".