12087828 has 36 divisors (see below), whose sum is σ = 30663360. Its totient is φ = 4015056.

The previous prime is 12087793. The next prime is 12087839. The reversal of 12087828 is 82878021.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×12087828² = 292231171515168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12087792 and 12087801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16453 + ... + 17171.

It is an arithmetic number, because the mean of its divisors is an integer number (851760).

Almost surely, 2^12087828 is an apocalyptic number.

12087828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12087828 is an abundant number, since it is smaller than the sum of its proper divisors (18575532).

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

12087828 is a wasteful number, since it uses less digits than its factorization.

12087828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 1191 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 12087828 is about 3476.7553839751. The cubic root of 12087828 is about 229.5000355988.

The spelling of 12087828 in words is "twelve million, eighty-seven thousand, eight hundred twenty-eight".