28058002687 has 16 divisors (see below), whose sum is σ = 32972758560. Its totient is φ = 23538384000.

The previous prime is 28058002667. The next prime is 28058002711. The reversal of 28058002687 is 78620085082.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28058002687 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 (28058002667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503937 + ... + 556837.

It is an arithmetic number, because the mean of its divisors is an integer number (2060797410).

Almost surely, 2^28058002687 is an apocalyptic number.

28058002687 is a deficient number, since it is larger than the sum of its proper divisors (4914755873).

28058002687 is a wasteful number, since it uses less digits than its factorization.

28058002687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56634.

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 28058002687 in words is "twenty-eight billion, fifty-eight million, two thousand, six hundred eighty-seven".