27928101 has 4 divisors (see below), whose sum is σ = 37237472. Its totient is φ = 18618732.

The previous prime is 27928091. The next prime is 27928123. The reversal of 27928101 is 10182972.

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 not a de Polignac number, because 27928101 - 2⁷ = 27927973 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 (27928151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4654681 + ... + 4654686.

It is an arithmetic number, because the mean of its divisors is an integer number (9309368).

Almost surely, 2^27928101 is an apocalyptic number.

It is an amenable number.

27928101 is a deficient number, since it is larger than the sum of its proper divisors (9309371).

27928101 is an equidigital number, since it uses as much as digits as its factorization.

27928101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9309370.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 27928101 is about 5284.7044382822. The cubic root of 27928101 is about 303.3987604577.

The spelling of 27928101 in words is "twenty-seven million, nine hundred twenty-eight thousand, one hundred one".