28457603 has 2 divisors, whose sum is σ = 28457604. Its totient is φ = 28457602.

The previous prime is 28457563. The next prime is 28457633. The reversal of 28457603 is 30675482.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28457603 - 2⁸ = 28457347 is a prime.

It is not a weakly prime, because it can be changed into another prime (28457633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14228801 + 14228802.

It is an arithmetic number, because the mean of its divisors is an integer number (14228802).

Almost surely, 2^28457603 is an apocalyptic number.

28457603 is a deficient number, since it is larger than the sum of its proper divisors (1).

28457603 is an equidigital number, since it uses as much as digits as its factorization.

28457603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 28457603 is about 5334.5668052804. The cubic root of 28457603 is about 305.3041952971.

The spelling of 28457603 in words is "twenty-eight million, four hundred fifty-seven thousand, six hundred three".