28628469067 has 4 divisors (see below), whose sum is σ = 31231057176. Its totient is φ = 26025880960.

The previous prime is 28628469053. The next prime is 28628469073. The reversal of 28628469067 is 76096482682.

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

It is a cyclic number.

It is not a de Polignac number, because 28628469067 - 2¹¹ = 28628467019 is a prime.

It is a super-2 number, since 2×28628469067² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28628469017) 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, 1301294038 + ... + 1301294059.

It is an arithmetic number, because the mean of its divisors is an integer number (7807764294).

Almost surely, 2^28628469067 is an apocalyptic number.

28628469067 is a deficient number, since it is larger than the sum of its proper divisors (2602588109).

28628469067 is a wasteful number, since it uses less digits than its factorization.

28628469067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602588108.

The product of its (nonzero) digits is 13934592, while the sum is 58.

The spelling of 28628469067 in words is "twenty-eight billion, six hundred twenty-eight million, four hundred sixty-nine thousand, sixty-seven".