28741687 has 8 divisors (see below), whose sum is σ = 31056480. Its totient is φ = 26441760.

The previous prime is 28741649. The next prime is 28741729. The reversal of 28741687 is 78614782.

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 28741687 - 2²³ = 20353079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28741087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489 + ... + 7597.

It is an arithmetic number, because the mean of its divisors is an integer number (3882060).

Almost surely, 2^28741687 is an apocalyptic number.

28741687 is a deficient number, since it is larger than the sum of its proper divisors (2314793).

28741687 is a wasteful number, since it uses less digits than its factorization.

28741687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7433.

The product of its digits is 150528, while the sum is 43.

The square root of 28741687 is about 5361.1274000904. The cubic root of 28741687 is about 306.3167544611.

The spelling of 28741687 in words is "twenty-eight million, seven hundred forty-one thousand, six hundred eighty-seven".