28894410 has 48 divisors (see below), whose sum is σ = 77164776. Its totient is φ = 7496064.

The previous prime is 28894399. The next prime is 28894423. The reversal of 28894410 is 1449882.

It can be written as a sum of positive squares in 4 ways, for example, as 25310961 + 3583449 = 5031^2 + 1893^2 .

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1009 + ... + 7668.

Almost surely, 2^28894410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28894410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38582388).

28894410 is an abundant number, since it is smaller than the sum of its proper divisors (48270366).

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

28894410 is a wasteful number, since it uses less digits than its factorization.

28894410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8727 (or 8724 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 28894410 is about 5375.3520814920. The cubic root of 28894410 is about 306.8583487107.

The spelling of 28894410 in words is "twenty-eight million, eight hundred ninety-four thousand, four hundred ten".