28468449 has 16 divisors (see below), whose sum is σ = 42280000. Its totient is φ = 18931968.

The previous prime is 28468423. The next prime is 28468469. The reversal of 28468449 is 94486482.

It is not a de Polignac number, because 28468449 - 2²³ = 20079841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28468409) 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, 12417 + ... + 14529.

It is an arithmetic number, because the mean of its divisors is an integer number (2642500).

Almost surely, 2^28468449 is an apocalyptic number.

It is an amenable number.

28468449 is a deficient number, since it is larger than the sum of its proper divisors (13811551).

28468449 is a wasteful number, since it uses less digits than its factorization.

28468449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621 (or 2615 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 28468449 is about 5335.5832858273. The cubic root of 28468449 is about 305.3429770679.

The spelling of 28468449 in words is "twenty-eight million, four hundred sixty-eight thousand, four hundred forty-nine".