12920834 has 8 divisors (see below), whose sum is σ = 20049660. Its totient is φ = 6237616.

The previous prime is 12920827. The next prime is 12920839. The reversal of 12920834 is 43802921.

It can be written as a sum of positive squares in 2 ways, for example, as 12623809 + 297025 = 3553^2 + 545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 12920797 and 12920806.

It is not an unprimeable number, because it can be changed into a prime (12920839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111329 + ... + 111444.

Almost surely, 2^12920834 is an apocalyptic number.

12920834 is a deficient number, since it is larger than the sum of its proper divisors (7128826).

12920834 is a wasteful number, since it uses less digits than its factorization.

12920834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222804.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 12920834 is about 3594.5561617535. The cubic root of 12920834 is about 234.6551997919.

The spelling of 12920834 in words is "twelve million, nine hundred twenty thousand, eight hundred thirty-four".