28838545 has 16 divisors (see below), whose sum is σ = 36892368. Its totient is φ = 21565440.

The previous prime is 28838531. The next prime is 28838569. The reversal of 28838545 is 54583882.

It can be written as a sum of positive squares in 8 ways, for example, as 33856 + 28804689 = 184^2 + 5367^2 .

It is not a de Polignac number, because 28838545 - 2⁷ = 28838417 is a prime.

It is a Duffinian 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, 12265 + ... + 14425.

It is an arithmetic number, because the mean of its divisors is an integer number (2305773).

Almost surely, 2^28838545 is an apocalyptic number.

It is an amenable number.

28838545 is a deficient number, since it is larger than the sum of its proper divisors (8053823).

28838545 is a wasteful number, since it uses less digits than its factorization.

28838545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340.

The product of its digits is 307200, while the sum is 43.

The square root of 28838545 is about 5370.1531635513. The cubic root of 28838545 is about 306.6604592054.

The spelling of 28838545 in words is "twenty-eight million, eight hundred thirty-eight thousand, five hundred forty-five".