28411057 has 4 divisors (see below), whose sum is σ = 28445760. Its totient is φ = 28376356.

The previous prime is 28411051. The next prime is 28411087. The reversal of 28411057 is 75011482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28411057 - 2¹⁵ = 28378289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28411051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16093 + ... + 17770.

It is an arithmetic number, because the mean of its divisors is an integer number (7111440).

Almost surely, 2^28411057 is an apocalyptic number.

It is an amenable number.

28411057 is a deficient number, since it is larger than the sum of its proper divisors (34703).

28411057 is an equidigital number, since it uses as much as digits as its factorization.

28411057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34702.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 28411057 is about 5330.2023413750. The cubic root of 28411057 is about 305.1376499522.

The spelling of 28411057 in words is "twenty-eight million, four hundred eleven thousand, fifty-seven".