28929667 has 8 divisors (see below), whose sum is σ = 31217760. Its totient is φ = 26650560.

The previous prime is 28929643. The next prime is 28929673. The reversal of 28929667 is 76692982.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28929667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28929667.

It is not an unprimeable number, because it can be changed into a prime (28929167) 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, 5442 + ... + 9352.

It is an arithmetic number, because the mean of its divisors is an integer number (3902220).

Almost surely, 2^28929667 is an apocalyptic number.

28929667 is a deficient number, since it is larger than the sum of its proper divisors (2288093).

28929667 is a wasteful number, since it uses less digits than its factorization.

28929667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493.

The product of its digits is 653184, while the sum is 49.

The square root of 28929667 is about 5378.6305877983. The cubic root of 28929667 is about 306.9831076446.

The spelling of 28929667 in words is "twenty-eight million, nine hundred twenty-nine thousand, six hundred sixty-seven".