28331448 has 16 divisors (see below), whose sum is σ = 70828680. Its totient is φ = 9443808.

The previous prime is 28331447. The next prime is 28331461. The reversal of 28331448 is 84413382.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28331447) 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, 590215 + ... + 590262.

Almost surely, 2^28331448 is an apocalyptic number.

It is an amenable number.

28331448 is an abundant number, since it is smaller than the sum of its proper divisors (42497232).

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

28331448 is a wasteful number, since it uses less digits than its factorization.

28331448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180486 (or 1180482 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 28331448 is about 5322.7293750481. The cubic root of 28331448 is about 304.8523804137.

The spelling of 28331448 in words is "twenty-eight million, three hundred thirty-one thousand, four hundred forty-eight".