28450049 has 6 divisors (see below), whose sum is σ = 30026610. Its totient is φ = 26952336.

The previous prime is 28450031. The next prime is 28450067. The reversal of 28450049 is 94005482.

It is an interprime number because it is at equal distance from previous prime (28450031) and next prime (28450067).

It can be written as a sum of positive squares in only one way, i.e., 14440000 + 14010049 = 3800^2 + 3743^2 .

It is not a de Polignac number, because 28450049 - 2⁸ = 28449793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28449997 and 28450024.

It is not an unprimeable number, because it can be changed into a prime (28450069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39044 + ... + 39765.

It is an arithmetic number, because the mean of its divisors is an integer number (5004435).

Almost surely, 2^28450049 is an apocalyptic number.

It is an amenable number.

28450049 is a deficient number, since it is larger than the sum of its proper divisors (1576561).

28450049 is an equidigital number, since it uses as much as digits as its factorization.

28450049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78847 (or 78828 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 28450049 is about 5333.8587345373. The cubic root of 28450049 is about 305.2771788265.

The spelling of 28450049 in words is "twenty-eight million, four hundred fifty thousand, forty-nine".