28214453 has 4 divisors (see below), whose sum is σ = 28237728. Its totient is φ = 28191180.

The previous prime is 28214413. The next prime is 28214467. The reversal of 28214453 is 35441282.

It is a happy number.

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: 35441282 = 2 ⋅17720641.

It is a cyclic number.

It is not a de Polignac number, because 28214453 - 2¹⁶ = 28148917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28214413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9713 + ... + 12278.

It is an arithmetic number, because the mean of its divisors is an integer number (7059432).

Almost surely, 2^28214453 is an apocalyptic number.

It is an amenable number.

28214453 is a deficient number, since it is larger than the sum of its proper divisors (23275).

28214453 is a wasteful number, since it uses less digits than its factorization.

28214453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23274.

The product of its digits is 7680, while the sum is 29.

The square root of 28214453 is about 5311.7278733007. The cubic root of 28214453 is about 304.4321711367.

The spelling of 28214453 in words is "twenty-eight million, two hundred fourteen thousand, four hundred fifty-three".