28613445 has 32 divisors (see below), whose sum is σ = 53052672. Its totient is φ = 12897792.

The previous prime is 28613441. The next prime is 28613461. The reversal of 28613445 is 54431682.

It is not a de Polignac number, because 28613445 - 2² = 28613441 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 (28613441) 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 31 ways as a sum of consecutive naturals, for example, 5799 + ... + 9531.

It is an arithmetic number, because the mean of its divisors is an integer number (1657896).

Almost surely, 2^28613445 is an apocalyptic number.

It is an amenable number.

28613445 is a deficient number, since it is larger than the sum of its proper divisors (24439227).

28613445 is a wasteful number, since it uses less digits than its factorization.

28613445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821.

The product of its digits is 23040, while the sum is 33.

The square root of 28613445 is about 5349.1536713764. The cubic root of 28613445 is about 305.8604921761.

It can be divided in two parts, 286 and 13445, that added together give a palindrome (13731).

The spelling of 28613445 in words is "twenty-eight million, six hundred thirteen thousand, four hundred forty-five".