28831450449 has 4 divisors (see below), whose sum is σ = 38441933936. Its totient is φ = 19220966964.

The previous prime is 28831450433. The next prime is 28831450471. The reversal of 28831450449 is 94405413882.

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 not a de Polignac number, because 28831450449 - 2⁴ = 28831450433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28831450398 and 28831450407.

It is not an unprimeable number, because it can be changed into a prime (28831450049) 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, 4805241739 + ... + 4805241744.

It is an arithmetic number, because the mean of its divisors is an integer number (9610483484).

Almost surely, 2^28831450449 is an apocalyptic number.

It is an amenable number.

28831450449 is a deficient number, since it is larger than the sum of its proper divisors (9610483487).

28831450449 is an equidigital number, since it uses as much as digits as its factorization.

28831450449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9610483486.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 28831450449 in words is "twenty-eight billion, eight hundred thirty-one million, four hundred fifty thousand, four hundred forty-nine".