28054207 has 2 divisors, whose sum is σ = 28054208. Its totient is φ = 28054206.

The previous prime is 28054193. The next prime is 28054211. The reversal of 28054207 is 70245082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28054207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28054277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14027103 + 14027104.

It is an arithmetic number, because the mean of its divisors is an integer number (14027104).

Almost surely, 2^28054207 is an apocalyptic number.

28054207 is a deficient number, since it is larger than the sum of its proper divisors (1).

28054207 is an equidigital number, since it uses as much as digits as its factorization.

28054207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 28054207 is about 5296.6222255320. The cubic root of 28054207 is about 303.8547284611.

Adding to 28054207 its reverse (70245082), we get a palindrome (98299289).

The spelling of 28054207 in words is "twenty-eight million, fifty-four thousand, two hundred seven".