28835431 has 2 divisors, whose sum is σ = 28835432. Its totient is φ = 28835430.

The previous prime is 28835357. The next prime is 28835437. The reversal of 28835431 is 13453882.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28835431 - 2¹⁷ = 28704359 is a prime.

It is a super-2 number, since 2×28835431² = 1662964161911522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28835437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14417715 + 14417716.

It is an arithmetic number, because the mean of its divisors is an integer number (14417716).

Almost surely, 2^28835431 is an apocalyptic number.

28835431 is a deficient number, since it is larger than the sum of its proper divisors (1).

28835431 is an equidigital number, since it uses as much as digits as its factorization.

28835431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 34.

The square root of 28835431 is about 5369.8632198595. The cubic root of 28835431 is about 306.6494210266.

The spelling of 28835431 in words is "twenty-eight million, eight hundred thirty-five thousand, four hundred thirty-one".