28275936 has 96 divisors (see below), whose sum is σ = 81002880. Its totient is φ = 8584704.

The previous prime is 28275931. The next prime is 28275941. The reversal of 28275936 is 63957282.

It is an interprime number because it is at equal distance from previous prime (28275931) and next prime (28275941).

It is a tau number, because it is divible by the number of its divisors (96).

Its product of digits (181440) is a multiple of the sum of its prime divisors (320).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28275931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173391 + ... + 173553.

It is an arithmetic number, because the mean of its divisors is an integer number (843780).

Almost surely, 2^28275936 is an apocalyptic number.

28275936 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28275936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40501440).

28275936 is an abundant number, since it is smaller than the sum of its proper divisors (52726944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28275936 is a wasteful number, since it uses less digits than its factorization.

28275936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 320 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 28275936 is about 5317.5122002681. The cubic root of 28275936 is about 304.6531432714.

The spelling of 28275936 in words is "twenty-eight million, two hundred seventy-five thousand, nine hundred thirty-six".