28875756 has 96 divisors (see below), whose sum is σ = 85700608. Its totient is φ = 7361280.

The previous prime is 28875751. The next prime is 28875761. The reversal of 28875756 is 65757882.

It is an interprime number because it is at equal distance from previous prime (28875751) and next prime (28875761).

It is not an unprimeable number, because it can be changed into a prime (28875751) 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, 33426 + ... + 34278.

Almost surely, 2^28875756 is an apocalyptic number.

28875756 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 28875756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42850304).

28875756 is an abundant number, since it is smaller than the sum of its proper divisors (56824852).

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

28875756 is a wasteful number, since it uses less digits than its factorization.

28875756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 909 counting only the distinct ones).

The product of its digits is 940800, while the sum is 48.

The square root of 28875756 is about 5373.6166591970. The cubic root of 28875756 is about 306.7922993964.

The spelling of 28875756 in words is "twenty-eight million, eight hundred seventy-five thousand, seven hundred fifty-six".