12609828 has 72 divisors (see below), whose sum is σ = 39748800. Its totient is φ = 3274560.

The previous prime is 12609823. The next prime is 12609829. The reversal of 12609828 is 82890621.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 = 12609792 and 12609801.

It is not an unprimeable number, because it can be changed into a prime (12609823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 498 + ... + 5046.

Almost surely, 2^12609828 is an apocalyptic number.

12609828 is a gapful number since it is divisible by the number (18) 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 12609828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19874400).

12609828 is an abundant number, since it is smaller than the sum of its proper divisors (27138972).

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

12609828 is a wasteful number, since it uses less digits than its factorization.

12609828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4577 (or 4572 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 12609828 is about 3551.0319626835. The cubic root of 12609828 is about 232.7571625576.

The spelling of 12609828 in words is "twelve million, six hundred nine thousand, eight hundred twenty-eight".