28750677 has 4 divisors (see below), whose sum is σ = 38334240. Its totient is φ = 19167116.

The previous prime is 28750663. The next prime is 28750679. The reversal of 28750677 is 77605782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28750677 - 2¹⁶ = 28685141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28750679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4791777 + ... + 4791782.

It is an arithmetic number, because the mean of its divisors is an integer number (9583560).

Almost surely, 2^28750677 is an apocalyptic number.

It is an amenable number.

28750677 is a deficient number, since it is larger than the sum of its proper divisors (9583563).

28750677 is an equidigital number, since it uses as much as digits as its factorization.

28750677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9583562.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 28750677 is about 5361.9657775857. The cubic root of 28750677 is about 306.3486883389.

The spelling of 28750677 in words is "twenty-eight million, seven hundred fifty thousand, six hundred seventy-seven".