28241810 has 8 divisors (see below), whose sum is σ = 50835276. Its totient is φ = 11296720.

The previous prime is 28241803. The next prime is 28241813. The reversal of 28241810 is 1814282.

It can be written as a sum of positive squares in 2 ways, for example, as 28079401 + 162409 = 5299^2 + 403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28241810² = 1595199664152200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28241810.

It is not an unprimeable number, because it can be changed into a prime (28241813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1412081 + ... + 1412100.

Almost surely, 2^28241810 is an apocalyptic number.

28241810 is a deficient number, since it is larger than the sum of its proper divisors (22593466).

28241810 is a wasteful number, since it uses less digits than its factorization.

28241810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824188.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 28241810 is about 5314.3024001274. The cubic root of 28241810 is about 304.5305327885.

The spelling of 28241810 in words is "twenty-eight million, two hundred forty-one thousand, eight hundred ten".