28494436 has 12 divisors (see below), whose sum is σ = 50047228. Its totient is φ = 14195232.

The previous prime is 28494391. The next prime is 28494437. The reversal of 28494436 is 63449482.

It can be written as a sum of positive squares in 2 ways, for example, as 10601536 + 17892900 = 3256^2 + 4230^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28494437) 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, 11751 + ... + 13966.

Almost surely, 2^28494436 is an apocalyptic number.

It is an amenable number.

28494436 is a deficient number, since it is larger than the sum of its proper divisors (21552792).

28494436 is a wasteful number, since it uses less digits than its factorization.

28494436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25998 (or 25996 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 28494436 is about 5338.0179842335. The cubic root of 28494436 is about 305.4358580761.

The spelling of 28494436 in words is "twenty-eight million, four hundred ninety-four thousand, four hundred thirty-six".