28655453 has 4 divisors (see below), whose sum is σ = 28673088. Its totient is φ = 28637820.

The previous prime is 28655443. The next prime is 28655461. The reversal of 28655453 is 35455682.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35455682 = 2 ⋅17727841.

It is a cyclic number.

It is not a de Polignac number, because 28655453 - 2⁴ = 28655437 is a prime.

It is a super-2 number, since 2×28655453² = 1642269973270418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28655413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6101 + ... + 9722.

It is an arithmetic number, because the mean of its divisors is an integer number (7168272).

Almost surely, 2^28655453 is an apocalyptic number.

It is an amenable number.

28655453 is a deficient number, since it is larger than the sum of its proper divisors (17635).

28655453 is a wasteful number, since it uses less digits than its factorization.

28655453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17634.

The product of its digits is 144000, while the sum is 38.

The square root of 28655453 is about 5353.0788337180. The cubic root of 28655453 is about 306.0100990587.

The spelling of 28655453 in words is "twenty-eight million, six hundred fifty-five thousand, four hundred fifty-three".