28956541 has 4 divisors (see below), whose sum is σ = 29081052. Its totient is φ = 28832032.

The previous prime is 28956527. The next prime is 28956553. The reversal of 28956541 is 14565982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7371225 + 21585316 = 2715^2 + 4646^2 .

It is a cyclic number.

It is not a de Polignac number, because 28956541 - 2⁵ = 28956509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28956494 and 28956503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28956041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61906 + ... + 62371.

It is an arithmetic number, because the mean of its divisors is an integer number (7270263).

Almost surely, 2^28956541 is an apocalyptic number.

It is an amenable number.

28956541 is a deficient number, since it is larger than the sum of its proper divisors (124511).

28956541 is a wasteful number, since it uses less digits than its factorization.

28956541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124510.

The product of its digits is 86400, while the sum is 40.

The square root of 28956541 is about 5381.1282274259. The cubic root of 28956541 is about 307.0781347876.

The spelling of 28956541 in words is "twenty-eight million, nine hundred fifty-six thousand, five hundred forty-one".