27428133 has 4 divisors (see below), whose sum is σ = 36570848. Its totient is φ = 18285420.

The previous prime is 27428131. The next prime is 27428161. The reversal of 27428133 is 33182472.

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 27428133 - 2¹ = 27428131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27428133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27428131) 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, 4571353 + ... + 4571358.

It is an arithmetic number, because the mean of its divisors is an integer number (9142712).

Almost surely, 2^27428133 is an apocalyptic number.

It is an amenable number.

27428133 is a deficient number, since it is larger than the sum of its proper divisors (9142715).

27428133 is an equidigital number, since it uses as much as digits as its factorization.

27428133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9142714.

The product of its digits is 8064, while the sum is 30.

The square root of 27428133 is about 5237.1875085775. The cubic root of 27428133 is about 301.5773695926.

The spelling of 27428133 in words is "twenty-seven million, four hundred twenty-eight thousand, one hundred thirty-three".