28682071 has 4 divisors (see below), whose sum is σ = 31289544. Its totient is φ = 26074600.

The previous prime is 28682051. The next prime is 28682107. The reversal of 28682071 is 17028682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28682071 is a prime.

It is a super-2 number, since 2×28682071² = 1645322393698082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28682011) 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, 1303720 + ... + 1303741.

It is an arithmetic number, because the mean of its divisors is an integer number (7822386).

Almost surely, 2^28682071 is an apocalyptic number.

28682071 is a deficient number, since it is larger than the sum of its proper divisors (2607473).

28682071 is a wasteful number, since it uses less digits than its factorization.

28682071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607472.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 28682071 is about 5355.5644893886. The cubic root of 28682071 is about 306.1048204838.

The spelling of 28682071 in words is "twenty-eight million, six hundred eighty-two thousand, seventy-one".