28426007 has 2 divisors, whose sum is σ = 28426008. Its totient is φ = 28426006.

The previous prime is 28425983. The next prime is 28426009. The reversal of 28426007 is 70062482.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28426007 is a prime.

Together with 28426009, 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 (28426009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14213003 + 14213004.

It is an arithmetic number, because the mean of its divisors is an integer number (14213004).

Almost surely, 2^28426007 is an apocalyptic number.

28426007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28426007 is an equidigital number, since it uses as much as digits as its factorization.

28426007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 28426007 is about 5331.6045427245. The cubic root of 28426007 is about 305.1911620755.

Adding to 28426007 its reverse (70062482), we get a palindrome (98488489).

The spelling of 28426007 in words is "twenty-eight million, four hundred twenty-six thousand, seven".