28692101 has 4 divisors (see below), whose sum is σ = 28759104. Its totient is φ = 28625100.

The previous prime is 28692077. The next prime is 28692121. The reversal of 28692101 is 10129682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28692101 - 2¹⁰ = 28691077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28692121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32855 + ... + 33716.

It is an arithmetic number, because the mean of its divisors is an integer number (7189776).

Almost surely, 2^28692101 is an apocalyptic number.

28692101 is the 2396-th centered decagonal number.

It is an amenable number.

28692101 is a deficient number, since it is larger than the sum of its proper divisors (67003).

28692101 is an equidigital number, since it uses as much as digits as its factorization.

28692101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67002.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 28692101 is about 5356.5008167646. The cubic root of 28692101 is about 306.1404975163.

The spelling of 28692101 in words is "twenty-eight million, six hundred ninety-two thousand, one hundred one".