28695101 has 4 divisors (see below), whose sum is σ = 29236572. Its totient is φ = 28153632.

The previous prime is 28695089. The next prime is 28695103. The reversal of 28695101 is 10159682.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24492601 + 4202500 = 4949^2 + 2050^2 .

It is a cyclic number.

It is not a de Polignac number, because 28695101 - 2¹⁴ = 28678717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28695103) 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, 270656 + ... + 270761.

It is an arithmetic number, because the mean of its divisors is an integer number (7309143).

Almost surely, 2^28695101 is an apocalyptic number.

It is an amenable number.

28695101 is a deficient number, since it is larger than the sum of its proper divisors (541471).

28695101 is an equidigital number, since it uses as much as digits as its factorization.

28695101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541470.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 28695101 is about 5356.7808430064. The cubic root of 28695101 is about 306.1511669974.

The spelling of 28695101 in words is "twenty-eight million, six hundred ninety-five thousand, one hundred one".