210428107 has 2 divisors, whose sum is σ = 210428108. Its totient is φ = 210428106.

The previous prime is 210428011. The next prime is 210428117. The reversal of 210428107 is 701824012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210428107 is a prime.

It is not a weakly prime, because it can be changed into another prime (210428117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105214053 + 105214054.

It is an arithmetic number, because the mean of its divisors is an integer number (105214054).

Almost surely, 2^210428107 is an apocalyptic number.

210428107 is a deficient number, since it is larger than the sum of its proper divisors (1).

210428107 is an equidigital number, since it uses as much as digits as its factorization.

210428107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 210428107 is about 14506.1403205677. The cubic root of 210428107 is about 594.7958313689.

The spelling of 210428107 in words is "two hundred ten million, four hundred twenty-eight thousand, one hundred seven".