28282401 has 12 divisors (see below), whose sum is σ = 46688512. Its totient is φ = 16161336.

The previous prime is 28282399. The next prime is 28282403. The reversal of 28282401 is 10428282.

It is an interprime number because it is at equal distance from previous prime (28282399) and next prime (28282403).

It is not a de Polignac number, because 28282401 - 2¹ = 28282399 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28282403) 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 11 ways as a sum of consecutive naturals, for example, 224401 + ... + 224526.

Almost surely, 2^28282401 is an apocalyptic number.

28282401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28282401 is a deficient number, since it is larger than the sum of its proper divisors (18406111).

28282401 is a wasteful number, since it uses less digits than its factorization.

28282401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448940 (or 448937 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 28282401 is about 5318.1200625785. The cubic root of 28282401 is about 304.6763600976.

The spelling of 28282401 in words is "twenty-eight million, two hundred eighty-two thousand, four hundred one".