28241416 has 16 divisors (see below), whose sum is σ = 60517440. Its totient is φ = 12103440.

The previous prime is 28241413. The next prime is 28241431. The reversal of 28241416 is 61414282.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (28241413) 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, 252100 + ... + 252211.

It is an arithmetic number, because the mean of its divisors is an integer number (3782340).

Almost surely, 2^28241416 is an apocalyptic number.

It is an amenable number.

28241416 is an abundant number, since it is smaller than the sum of its proper divisors (32276024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28241416 is a wasteful number, since it uses less digits than its factorization.

28241416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504324 (or 504320 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 28241416 is about 5314.2653302220. The cubic root of 28241416 is about 304.5291166188.

Adding to 28241416 its reverse (61414282), we get a palindrome (89655698).

The spelling of 28241416 in words is "twenty-eight million, two hundred forty-one thousand, four hundred sixteen".