28488541 has 2 divisors, whose sum is σ = 28488542. Its totient is φ = 28488540.

The previous prime is 28488539. The next prime is 28488547. The reversal of 28488541 is 14588482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16168441 + 12320100 = 4021^2 + 3510^2 .

It is a cyclic number.

It is not a de Polignac number, because 28488541 - 2¹ = 28488539 is a prime.

Together with 28488539, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 28488494 and 28488503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28488547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14244270 + 14244271.

It is an arithmetic number, because the mean of its divisors is an integer number (14244271).

Almost surely, 2^28488541 is an apocalyptic number.

It is an amenable number.

28488541 is a deficient number, since it is larger than the sum of its proper divisors (1).

28488541 is an equidigital number, since it uses as much as digits as its factorization.

28488541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81920, while the sum is 40.

The square root of 28488541 is about 5337.4657844337. The cubic root of 28488541 is about 305.4147935126.

The spelling of 28488541 in words is "twenty-eight million, four hundred eighty-eight thousand, five hundred forty-one".