28338995 has 8 divisors (see below), whose sum is σ = 34836480. Its totient is φ = 22118080.

The previous prime is 28338943. The next prime is 28339001. The reversal of 28338995 is 59983382.

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

It is not a de Polignac number, because 28338995 - 2¹⁰ = 28337971 is a prime.

It is a super-2 number, since 2×28338995² = 1606197275220050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68915 + ... + 69324.

It is an arithmetic number, because the mean of its divisors is an integer number (4354560).

Almost surely, 2^28338995 is an apocalyptic number.

28338995 is a deficient number, since it is larger than the sum of its proper divisors (6497485).

28338995 is a wasteful number, since it uses less digits than its factorization.

28338995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138285.

The product of its digits is 466560, while the sum is 47.

The square root of 28338995 is about 5323.4382686380. The cubic root of 28338995 is about 304.8794471166.

The spelling of 28338995 in words is "twenty-eight million, three hundred thirty-eight thousand, nine hundred ninety-five".