28622651 has 2 divisors, whose sum is σ = 28622652. Its totient is φ = 28622650.

The previous prime is 28622639. The next prime is 28622653. The reversal of 28622651 is 15622682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28622651 - 2²² = 24428347 is a prime.

It is a Sophie Germain prime.

Together with 28622653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28622653) 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, 14311325 + 14311326.

It is an arithmetic number, because the mean of its divisors is an integer number (14311326).

Almost surely, 2^28622651 is an apocalyptic number.

28622651 is a deficient number, since it is larger than the sum of its proper divisors (1).

28622651 is an equidigital number, since it uses as much as digits as its factorization.

28622651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 32.

The square root of 28622651 is about 5350.0141121309. The cubic root of 28622651 is about 305.8932908571.

The spelling of 28622651 in words is "twenty-eight million, six hundred twenty-two thousand, six hundred fifty-one".