28369448 has 8 divisors (see below), whose sum is σ = 53192730. Its totient is φ = 14184720.

The previous prime is 28369423. The next prime is 28369457. The reversal of 28369448 is 84496382.

It can be written as a sum of positive squares in only one way, i.e., 27019204 + 1350244 = 5198^2 + 1162^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 28369399 and 28369408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1773083 + ... + 1773098.

Almost surely, 2^28369448 is an apocalyptic number.

It is an amenable number.

28369448 is a deficient number, since it is larger than the sum of its proper divisors (24823282).

28369448 is a wasteful number, since it uses less digits than its factorization.

28369448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546187 (or 3546183 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 28369448 is about 5326.2977761293. The cubic root of 28369448 is about 304.9886155385.

The spelling of 28369448 in words is "twenty-eight million, three hundred sixty-nine thousand, four hundred forty-eight".