28441641 has 16 divisors (see below), whose sum is σ = 39398400. Its totient is φ = 18235008.

The previous prime is 28441631. The next prime is 28441657. The reversal of 28441641 is 14614482.

It is not a de Polignac number, because 28441641 - 2⁷ = 28441513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28441599 and 28441608.

It is not an unprimeable number, because it can be changed into a prime (28441631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8440 + ... + 11318.

It is an arithmetic number, because the mean of its divisors is an integer number (2462400).

Almost surely, 2^28441641 is an apocalyptic number.

It is an amenable number.

28441641 is a deficient number, since it is larger than the sum of its proper divisors (10956759).

28441641 is a wasteful number, since it uses less digits than its factorization.

28441641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3008.

The product of its digits is 6144, while the sum is 30.

The square root of 28441641 is about 5333.0705039405. The cubic root of 28441641 is about 305.2471024469.

The spelling of 28441641 in words is "twenty-eight million, four hundred forty-one thousand, six hundred forty-one".