28203441 has 16 divisors (see below), whose sum is σ = 43051008. Its totient is φ = 16088400.

The previous prime is 28203433. The next prime is 28203481. The reversal of 28203441 is 14430282.

It is not a de Polignac number, because 28203441 - 2³ = 28203433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28203481) 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, 22296 + ... + 23526.

It is an arithmetic number, because the mean of its divisors is an integer number (2690688).

Almost surely, 2^28203441 is an apocalyptic number.

28203441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28203441 is a deficient number, since it is larger than the sum of its proper divisors (14847567).

28203441 is a wasteful number, since it uses less digits than its factorization.

28203441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 28203441 is about 5310.6911979515. The cubic root of 28203441 is about 304.3925597207.

The spelling of 28203441 in words is "twenty-eight million, two hundred three thousand, four hundred forty-one".