28453205 has 16 divisors (see below), whose sum is σ = 38534400. Its totient is φ = 19978560.

The previous prime is 28453199. The next prime is 28453237. The reversal of 28453205 is 50235482.

It is a de Polignac number, because none of the positive numbers 2^k-28453205 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7325 + ... + 10514.

It is an arithmetic number, because the mean of its divisors is an integer number (2408400).

Almost surely, 2^28453205 is an apocalyptic number.

It is an amenable number.

28453205 is a deficient number, since it is larger than the sum of its proper divisors (10081195).

28453205 is a wasteful number, since it uses less digits than its factorization.

28453205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17884.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 28453205 is about 5334.1545721885. The cubic root of 28453205 is about 305.2884666705.

Adding to 28453205 its reverse (50235482), we get a palindrome (78688687).

The spelling of 28453205 in words is "twenty-eight million, four hundred fifty-three thousand, two hundred five".