28740611 has 8 divisors (see below), whose sum is σ = 29632560. Its totient is φ = 27862272.

The previous prime is 28740583. The next prime is 28740623. The reversal of 28740611 is 11604782.

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 28740611 - 2¹⁰ = 28739587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28740671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971 + ... + 7643.

It is an arithmetic number, because the mean of its divisors is an integer number (3704070).

Almost surely, 2^28740611 is an apocalyptic number.

28740611 is a deficient number, since it is larger than the sum of its proper divisors (891949).

28740611 is an equidigital number, since it uses as much as digits as its factorization.

28740611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6805.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 28740611 is about 5361.0270471245. The cubic root of 28740611 is about 306.3129318957.

The spelling of 28740611 in words is "twenty-eight million, seven hundred forty thousand, six hundred eleven".