28620107 has 2 divisors, whose sum is σ = 28620108. Its totient is φ = 28620106.

The previous prime is 28620103. The next prime is 28620113. The reversal of 28620107 is 70102682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28620107 - 2² = 28620103 is a prime.

It is a super-2 number, since 2×28620107² = 1638221049382898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28620101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14310053 + 14310054.

It is an arithmetic number, because the mean of its divisors is an integer number (14310054).

Almost surely, 2^28620107 is an apocalyptic number.

28620107 is a deficient number, since it is larger than the sum of its proper divisors (1).

28620107 is an equidigital number, since it uses as much as digits as its factorization.

28620107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 28620107 is about 5349.7763504655. The cubic root of 28620107 is about 305.8842279232.

Adding to 28620107 its reverse (70102682), we get a palindrome (98722789).

The spelling of 28620107 in words is "twenty-eight million, six hundred twenty thousand, one hundred seven".