28850641 has 4 divisors (see below), whose sum is σ = 28916800. Its totient is φ = 28784484.

The previous prime is 28850623. The next prime is 28850681. The reversal of 28850641 is 14605882.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14605882 = 2 ⋅7302941.

It is a cyclic number.

It is not a de Polignac number, because 28850641 - 2¹⁷ = 28719569 is a prime.

It is a super-2 number, since 2×28850641² = 1664718972221762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28850597 and 28850606.

It is not an unprimeable number, because it can be changed into a prime (28850611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32421 + ... + 33298.

It is an arithmetic number, because the mean of its divisors is an integer number (7229200).

Almost surely, 2^28850641 is an apocalyptic number.

It is an amenable number.

28850641 is a deficient number, since it is larger than the sum of its proper divisors (66159).

28850641 is an equidigital number, since it uses as much as digits as its factorization.

28850641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66158.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 28850641 is about 5371.2792703415. The cubic root of 28850641 is about 306.7033282939.

The spelling of 28850641 in words is "twenty-eight million, eight hundred fifty thousand, six hundred forty-one".