28929895 has 8 divisors (see below), whose sum is σ = 35106480. Its totient is φ = 22883520.

The previous prime is 28929889. The next prime is 28929977. The reversal of 28929895 is 59892982.

It is a happy number.

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

It is not a de Polignac number, because 28929895 - 2¹³ = 28921703 is a prime.

It is a super-2 number, since 2×28929895² = 1673877649422050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32061 + ... + 32950.

It is an arithmetic number, because the mean of its divisors is an integer number (4388310).

Almost surely, 2^28929895 is an apocalyptic number.

28929895 is a deficient number, since it is larger than the sum of its proper divisors (6176585).

28929895 is an equidigital number, since it uses as much as digits as its factorization.

28929895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65105.

The product of its digits is 933120, while the sum is 52.

The square root of 28929895 is about 5378.6517827426. The cubic root of 28929895 is about 306.9839141059.

The spelling of 28929895 in words is "twenty-eight million, nine hundred twenty-nine thousand, eight hundred ninety-five".