30105453 has 32 divisors (see below), whose sum is σ = 49593600. Its totient is φ = 16181760.

The previous prime is 30105437. The next prime is 30105463. The reversal of 30105453 is 35450103.

It is not a de Polignac number, because 30105453 - 2⁴ = 30105437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30105403) 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 31 ways as a sum of consecutive naturals, for example, 16633 + ... + 18353.

It is an arithmetic number, because the mean of its divisors is an integer number (1549800).

Almost surely, 2^30105453 is an apocalyptic number.

It is an amenable number.

30105453 is a deficient number, since it is larger than the sum of its proper divisors (19488147).

30105453 is a wasteful number, since it uses less digits than its factorization.

30105453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 30105453 is about 5486.8436281709. The cubic root of 30105453 is about 311.0868992732.

Adding to 30105453 its reverse (35450103), we get a palindrome (65555556).

The spelling of 30105453 in words is "thirty million, one hundred five thousand, four hundred fifty-three".