28844417 has 16 divisors (see below), whose sum is σ = 34156032. Its totient is φ = 23846400.

The previous prime is 28844411. The next prime is 28844441. The reversal of 28844417 is 71444882.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28844417 - 2⁸ = 28844161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28844411) 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, 23417 + ... + 24617.

It is an arithmetic number, because the mean of its divisors is an integer number (2134752).

Almost surely, 2^28844417 is an apocalyptic number.

It is an amenable number.

28844417 is a deficient number, since it is larger than the sum of its proper divisors (5311615).

28844417 is a wasteful number, since it uses less digits than its factorization.

28844417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328.

The product of its digits is 57344, while the sum is 38.

The square root of 28844417 is about 5370.6998612844. The cubic root of 28844417 is about 306.6812714899.

It can be divided in two parts, 2884 and 4417, that multiplied together give a triangular number (12738628 = T₅₀₄₇).

The spelling of 28844417 in words is "twenty-eight million, eight hundred forty-four thousand, four hundred seventeen".