28740783 has 8 divisors (see below), whose sum is σ = 38486448. Its totient is φ = 19077824.

The previous prime is 28740781. The next prime is 28740791. The reversal of 28740783 is 38704782.

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 28740783 - 2¹ = 28740781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28740781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19860 + ... + 21257.

It is an arithmetic number, because the mean of its divisors is an integer number (4810806).

Almost surely, 2^28740783 is an apocalyptic number.

28740783 is a deficient number, since it is larger than the sum of its proper divisors (9745665).

28740783 is a wasteful number, since it uses less digits than its factorization.

28740783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41353.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 28740783 is about 5361.0430888028. The cubic root of 28740783 is about 306.3135429441.

The spelling of 28740783 in words is "twenty-eight million, seven hundred forty thousand, seven hundred eighty-three".