28894424 has 64 divisors (see below), whose sum is σ = 63050400. Its totient is φ = 12294144.

The previous prime is 28894423. The next prime is 28894427. The reversal of 28894424 is 42449882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28894423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104174 + ... + 104450.

Almost surely, 2^28894424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28894424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31525200).

28894424 is an abundant number, since it is smaller than the sum of its proper divisors (34155976).

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

28894424 is a wasteful number, since it uses less digits than its factorization.

28894424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 368 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 28894424 is about 5375.3533837321. The cubic root of 28894424 is about 306.8583982706.

The spelling of 28894424 in words is "twenty-eight million, eight hundred ninety-four thousand, four hundred twenty-four".