28419712 has 16 divisors (see below), whose sum is σ = 56617650. Its totient is φ = 14209792.

The previous prime is 28419707. The next prime is 28419731. The reversal of 28419712 is 21791482.

It can be written as a sum of positive squares in only one way, i.e., 28132416 + 287296 = 5304^2 + 536^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110887 + ... + 111142.

Almost surely, 2^28419712 is an apocalyptic number.

It is an amenable number.

28419712 is a deficient number, since it is larger than the sum of its proper divisors (28197938).

28419712 is an equidigital number, since it uses as much as digits as its factorization.

28419712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222043 (or 222031 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 28419712 is about 5331.0141624273. The cubic root of 28419712 is about 305.1686320006.

The spelling of 28419712 in words is "twenty-eight million, four hundred nineteen thousand, seven hundred twelve".