28230453 has 12 divisors (see below), whose sum is σ = 42550560. Its totient is φ = 18001896.

The previous prime is 28230443. The next prime is 28230467. The reversal of 28230453 is 35403282.

It is not a de Polignac number, because 28230453 - 2⁸ = 28230197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28230443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67983 + ... + 68396.

It is an arithmetic number, because the mean of its divisors is an integer number (3545880).

Almost surely, 2^28230453 is an apocalyptic number.

28230453 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28230453 is a deficient number, since it is larger than the sum of its proper divisors (14320107).

28230453 is a wasteful number, since it uses less digits than its factorization.

28230453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136408 (or 136405 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 28230453 is about 5313.2337610913. The cubic root of 28230453 is about 304.4897065931.

The spelling of 28230453 in words is "twenty-eight million, two hundred thirty thousand, four hundred fifty-three".