28492591 has 2 divisors, whose sum is σ = 28492592. Its totient is φ = 28492590.

The previous prime is 28492589. The next prime is 28492603. The reversal of 28492591 is 19529482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28492591 - 2¹ = 28492589 is a prime.

Together with 28492589, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28492501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14246295 + 14246296.

It is an arithmetic number, because the mean of its divisors is an integer number (14246296).

Almost surely, 2^28492591 is an apocalyptic number.

28492591 is a deficient number, since it is larger than the sum of its proper divisors (1).

28492591 is an equidigital number, since it uses as much as digits as its factorization.

28492591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 28492591 is about 5337.8451644835. The cubic root of 28492591 is about 305.4292656625.

The spelling of 28492591 in words is "twenty-eight million, four hundred ninety-two thousand, five hundred ninety-one".