28657077 has 8 divisors (see below), whose sum is σ = 38274816. Its totient is φ = 19072032.

The previous prime is 28657063. The next prime is 28657141. The reversal of 28657077 is 77075682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28657077 - 2¹⁰ = 28656053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28657037) 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, 6048 + ... + 9689.

It is an arithmetic number, because the mean of its divisors is an integer number (4784352).

Almost surely, 2^28657077 is an apocalyptic number.

It is an amenable number.

28657077 is a deficient number, since it is larger than the sum of its proper divisors (9617739).

28657077 is a wasteful number, since it uses less digits than its factorization.

28657077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16347.

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

The square root of 28657077 is about 5353.2305199758. The cubic root of 28657077 is about 306.0158798201.

The spelling of 28657077 in words is "twenty-eight million, six hundred fifty-seven thousand, seventy-seven".