28740677 has 4 divisors (see below), whose sum is σ = 32846496. Its totient is φ = 24634860.

The previous prime is 28740671. The next prime is 28740683. The reversal of 28740677 is 77604782.

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 an interprime number because it is at equal distance from previous prime (28740671) and next prime (28740683).

It is a cyclic number.

It is not a de Polignac number, because 28740677 - 2¹² = 28736581 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 (28740671) 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, 2052899 + ... + 2052912.

It is an arithmetic number, because the mean of its divisors is an integer number (8211624).

Almost surely, 2^28740677 is an apocalyptic number.

It is an amenable number.

28740677 is a deficient number, since it is larger than the sum of its proper divisors (4105819).

28740677 is an equidigital number, since it uses as much as digits as its factorization.

28740677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105818.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 28740677 is about 5361.0332026579. The cubic root of 28740677 is about 306.3131663680.

The spelling of 28740677 in words is "twenty-eight million, seven hundred forty thousand, six hundred seventy-seven".