28660106 has 4 divisors (see below), whose sum is σ = 42990162. Its totient is φ = 14330052.

The previous prime is 28660103. The next prime is 28660109. The reversal of 28660106 is 60106682.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28660103) and next prime (28660109).

It can be written as a sum of positive squares in only one way, i.e., 28249225 + 410881 = 5315^2 + 641^2 .

It is not an unprimeable number, because it can be changed into a prime (28660103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7165025 + ... + 7165028.

Almost surely, 2^28660106 is an apocalyptic number.

28660106 is a deficient number, since it is larger than the sum of its proper divisors (14330056).

28660106 is a wasteful number, since it uses less digits than its factorization.

28660106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14330055.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 28660106 is about 5353.5134257794. The cubic root of 28660106 is about 306.0266612110.

Adding to 28660106 its reverse (60106682), we get a palindrome (88766788).

It can be divided in two parts, 286 and 60106, that multiplied together give a triangular number (17190316 = T₅₈₆₃).

The spelling of 28660106 in words is "twenty-eight million, six hundred sixty thousand, one hundred six".