12820467 has 8 divisors (see below), whose sum is σ = 18648000. Its totient is φ = 7769960.

The previous prime is 12820427. The next prime is 12820481. The reversal of 12820467 is 76402821.

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

It is not a de Polignac number, because 12820467 - 2⁸ = 12820211 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (12820427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194217 + ... + 194282.

It is an arithmetic number, because the mean of its divisors is an integer number (2331000).

Almost surely, 2^12820467 is an apocalyptic number.

12820467 is a deficient number, since it is larger than the sum of its proper divisors (5827533).

12820467 is a wasteful number, since it uses less digits than its factorization.

12820467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388513.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 12820467 is about 3580.5679717050. The cubic root of 12820467 is about 234.0460315608.

It can be divided in two parts, 128204 and 67, that added together give a triangular number (128271 = T₅₀₆).

The spelling of 12820467 in words is "twelve million, eight hundred twenty thousand, four hundred sixty-seven".