28448451 has 12 divisors (see below), whose sum is σ = 41517112. Its totient is φ = 18769536.

The previous prime is 28448437. The next prime is 28448467. The reversal of 28448451 is 15484482.

It is not a de Polignac number, because 28448451 - 2⁵ = 28448419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28448051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15421 + ... + 17166.

Almost surely, 2^28448451 is an apocalyptic number.

28448451 is a deficient number, since it is larger than the sum of its proper divisors (13068661).

28448451 is a wasteful number, since it uses less digits than its factorization.

28448451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32690 (or 32687 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 28448451 is about 5333.7089346908. The cubic root of 28448451 is about 305.2714630535.

The spelling of 28448451 in words is "twenty-eight million, four hundred forty-eight thousand, four hundred fifty-one".