28472241 has 16 divisors (see below), whose sum is σ = 45670400. Its totient is φ = 15413328.

The previous prime is 28472219. The next prime is 28472273. The reversal of 28472241 is 14227482.

It is not a de Polignac number, because 28472241 - 2¹¹ = 28470193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28472199 and 28472208.

It is not an unprimeable number, because it can be changed into a prime (28472201) 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, 35281 + ... + 36078.

It is an arithmetic number, because the mean of its divisors is an integer number (2854400).

Almost surely, 2^28472241 is an apocalyptic number.

28472241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28472241 is a deficient number, since it is larger than the sum of its proper divisors (17198159).

28472241 is a wasteful number, since it uses less digits than its factorization.

28472241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71388.

The product of its digits is 7168, while the sum is 30.

The square root of 28472241 is about 5335.9386240848. The cubic root of 28472241 is about 305.3565337034.

The spelling of 28472241 in words is "twenty-eight million, four hundred seventy-two thousand, two hundred forty-one".