28651448 has 16 divisors (see below), whose sum is σ = 61396080. Its totient is φ = 12279168.

The previous prime is 28651439. The next prime is 28651457. The reversal of 28651448 is 84415682.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28651439) and next prime (28651457).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255761 + ... + 255872.

It is an arithmetic number, because the mean of its divisors is an integer number (3837255).

Almost surely, 2^28651448 is an apocalyptic number.

28651448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28651448 is an abundant number, since it is smaller than the sum of its proper divisors (32744632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28651448 is a wasteful number, since it uses less digits than its factorization.

28651448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511646 (or 511642 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The square root of 28651448 is about 5352.7047368597. The cubic root of 28651448 is about 305.9958419986.

The spelling of 28651448 in words is "twenty-eight million, six hundred fifty-one thousand, four hundred forty-eight".