12820932 has 18 divisors (see below), whose sum is σ = 32408558. Its totient is φ = 4273632.

The previous prime is 12820909. The next prime is 12820937. The reversal of 12820932 is 23902821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12489156 + 331776 = 3534^2 + 576^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 12820896 and 12820905.

It is not an unprimeable number, because it can be changed into a prime (12820937) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178033 + ... + 178104.

Almost surely, 2^12820932 is an apocalyptic number.

12820932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12820932 is an abundant number, since it is smaller than the sum of its proper divisors (19587626).

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

12820932 is a wasteful number, since it uses less digits than its factorization.

12820932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356147 (or 356142 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12820932 is about 3580.6329049485. The cubic root of 12820932 is about 234.0488611532.

The spelling of 12820932 in words is "twelve million, eight hundred twenty thousand, nine hundred thirty-two".