28614631 has 2 divisors, whose sum is σ = 28614632. Its totient is φ = 28614630.

The previous prime is 28614629. The next prime is 28614667. The reversal of 28614631 is 13641682.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28614631 - 2¹ = 28614629 is a prime.

It is a super-2 number, since 2×28614631² = 1637594214532322, which contains 22 as substring.

Together with 28614629, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 28614593 and 28614602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28614601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14307315 + 14307316.

It is an arithmetic number, because the mean of its divisors is an integer number (14307316).

Almost surely, 2^28614631 is an apocalyptic number.

28614631 is a deficient number, since it is larger than the sum of its proper divisors (1).

28614631 is an equidigital number, since it uses as much as digits as its factorization.

28614631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 28614631 is about 5349.2645288862. The cubic root of 28614631 is about 305.8647179929.

The spelling of 28614631 in words is "twenty-eight million, six hundred fourteen thousand, six hundred thirty-one".