28655541 has 12 divisors (see below), whose sum is σ = 41441920. Its totient is φ = 19080360.

The previous prime is 28655503. The next prime is 28655581. The reversal of 28655541 is 14555682.

It is not a de Polignac number, because 28655541 - 2⁷ = 28655413 is a prime.

It is a super-2 number, since 2×28655541² = 1642280060005362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28655496 and 28655505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28655581) 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 11 ways as a sum of consecutive naturals, for example, 9180 + ... + 11898.

Almost surely, 2^28655541 is an apocalyptic number.

It is an amenable number.

28655541 is a deficient number, since it is larger than the sum of its proper divisors (12786379).

28655541 is a wasteful number, since it uses less digits than its factorization.

28655541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3896 (or 3893 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 28655541 is about 5353.0870532806. The cubic root of 28655541 is about 306.0104123075.

The spelling of 28655541 in words is "twenty-eight million, six hundred fifty-five thousand, five hundred forty-one".