28372441 has 4 divisors (see below), whose sum is σ = 28637712. Its totient is φ = 28107172.

The previous prime is 28372433. The next prime is 28372457. The reversal of 28372441 is 14427382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28372441 - 2³ = 28372433 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28372481) 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, 132475 + ... + 132688.

It is an arithmetic number, because the mean of its divisors is an integer number (7159428).

Almost surely, 2^28372441 is an apocalyptic number.

It is an amenable number.

28372441 is a deficient number, since it is larger than the sum of its proper divisors (265271).

28372441 is a wasteful number, since it uses less digits than its factorization.

28372441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265270.

The product of its digits is 10752, while the sum is 31.

The square root of 28372441 is about 5326.5787331081. The cubic root of 28372441 is about 304.9993406776. Note that the first 3 decimals are identical.

The spelling of 28372441 in words is "twenty-eight million, three hundred seventy-two thousand, four hundred forty-one".