28356276 has 48 divisors (see below), whose sum is σ = 72344384. Its totient is φ = 8591616.

The previous prime is 28356271. The next prime is 28356281. The reversal of 28356276 is 67265382.

It is an interprime number because it is at equal distance from previous prime (28356271) and next prime (28356281).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28356271) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9096 + ... + 11808.

Almost surely, 2^28356276 is an apocalyptic number.

28356276 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 28356276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36172192).

28356276 is an abundant number, since it is smaller than the sum of its proper divisors (43988108).

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

28356276 is a wasteful number, since it uses less digits than its factorization.

28356276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800 (or 2798 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 28356276 is about 5325.0611264097. The cubic root of 28356276 is about 304.9414059259.

The spelling of 28356276 in words is "twenty-eight million, three hundred fifty-six thousand, two hundred seventy-six".