28403383 has 16 divisors (see below), whose sum is σ = 30588480. Its totient is φ = 26320896.

The previous prime is 28403381. The next prime is 28403387. The reversal of 28403383 is 38330482.

It is a cyclic number.

It is not a de Polignac number, because 28403383 - 2¹ = 28403381 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 (28403381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110391 + ... + 110647.

It is an arithmetic number, because the mean of its divisors is an integer number (1911780).

Almost surely, 2^28403383 is an apocalyptic number.

28403383 is a deficient number, since it is larger than the sum of its proper divisors (2185097).

28403383 is a wasteful number, since it uses less digits than its factorization.

28403383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 28403383 is about 5329.4824326570. The cubic root of 28403383 is about 305.1101742974.

The spelling of 28403383 in words is "twenty-eight million, four hundred three thousand, three hundred eighty-three".