28761883 has 8 divisors (see below), whose sum is σ = 29538608. Its totient is φ = 27990144.

The previous prime is 28761857. The next prime is 28761919. The reversal of 28761883 is 38816782.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28761883 - 2⁹ = 28761371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28761833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12391 + ... + 14527.

It is an arithmetic number, because the mean of its divisors is an integer number (3692326).

Almost surely, 2^28761883 is an apocalyptic number.

28761883 is a deficient number, since it is larger than the sum of its proper divisors (776725).

28761883 is a wasteful number, since it uses less digits than its factorization.

28761883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493.

The product of its digits is 129024, while the sum is 43.

The square root of 28761883 is about 5363.0106283691. The cubic root of 28761883 is about 306.3884844741.

The spelling of 28761883 in words is "twenty-eight million, seven hundred sixty-one thousand, eight hundred eighty-three".