28453005 has 32 divisors (see below), whose sum is σ = 57811200. Its totient is φ = 13006656.

The previous prime is 28453003. The next prime is 28453027. The reversal of 28453005 is 50035482.

It is not a de Polignac number, because 28453005 - 2¹ = 28453003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 28453005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28453003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14110 + ... + 15999.

It is an arithmetic number, because the mean of its divisors is an integer number (1806600).

Almost surely, 2^28453005 is an apocalyptic number.

It is an amenable number.

28453005 is an abundant number, since it is smaller than the sum of its proper divisors (29358195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28453005 is a wasteful number, since it uses less digits than its factorization.

28453005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30130 (or 30124 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 28453005 is about 5334.1358250423. The cubic root of 28453005 is about 305.2877513693.

Adding to 28453005 its reverse (50035482), we get a palindrome (78488487).

It can be divided in two parts, 2845300 and 5, that added together give a triangular number (2845305 = T₂₃₈₅).

The spelling of 28453005 in words is "twenty-eight million, four hundred fifty-three thousand, five".