28783413 has 12 divisors (see below), whose sum is σ = 42103360. Its totient is φ = 18945576.

The previous prime is 28783409. The next prime is 28783421. The reversal of 28783413 is 31438782.

It is not a de Polignac number, because 28783413 - 2² = 28783409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28783463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19531 + ... + 20952.

Almost surely, 2^28783413 is an apocalyptic number.

It is an amenable number.

28783413 is a deficient number, since it is larger than the sum of its proper divisors (13319947).

28783413 is a wasteful number, since it uses less digits than its factorization.

28783413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40568 (or 40565 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 28783413 is about 5365.0175209406. The cubic root of 28783413 is about 306.4649154781.

The spelling of 28783413 in words is "twenty-eight million, seven hundred eighty-three thousand, four hundred thirteen".