27428469 has 8 divisors (see below), whose sum is σ = 36933792. Its totient is φ = 18104400.

The previous prime is 27428449. The next prime is 27428473. The reversal of 27428469 is 96482472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27428469 - 2⁷ = 27428341 is a prime.

It is a super-2 number, since 2×27428469² = 1504641823367922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27428469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27428449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44959 + ... + 45564.

It is an arithmetic number, because the mean of its divisors is an integer number (4616724).

Almost surely, 2^27428469 is an apocalyptic number.

It is an amenable number.

27428469 is a deficient number, since it is larger than the sum of its proper divisors (9505323).

27428469 is a wasteful number, since it uses less digits than its factorization.

27428469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90627.

The product of its digits is 193536, while the sum is 42.

The square root of 27428469 is about 5237.2195867655. The cubic root of 27428469 is about 301.5786010482.

It can be divided in two parts, 2742 and 8469, that added together give a palindrome (11211).

The spelling of 27428469 in words is "twenty-seven million, four hundred twenty-eight thousand, four hundred sixty-nine".