28838985 has 32 divisors (see below), whose sum is σ = 52937472. Its totient is φ = 13132800.

The previous prime is 28838981. The next prime is 28838989. The reversal of 28838985 is 58983882.

It is an interprime number because it is at equal distance from previous prime (28838981) and next prime (28838989).

It is not a de Polignac number, because 28838985 - 2² = 28838981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28838981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47685 + ... + 48285.

It is an arithmetic number, because the mean of its divisors is an integer number (1654296).

Almost surely, 2^28838985 is an apocalyptic number.

It is an amenable number.

28838985 is a deficient number, since it is larger than the sum of its proper divisors (24098487).

28838985 is a wasteful number, since it uses less digits than its factorization.

28838985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073.

The product of its digits is 1105920, while the sum is 51.

The square root of 28838985 is about 5370.1941305692. The cubic root of 28838985 is about 306.6620188069.

The spelling of 28838985 in words is "twenty-eight million, eight hundred thirty-eight thousand, nine hundred eighty-five".