12780204 has 12 divisors (see below), whose sum is σ = 29820504. Its totient is φ = 4260064.

The previous prime is 12780197. The next prime is 12780211. The reversal of 12780204 is 40208721.

It is an interprime number because it is at equal distance from previous prime (12780197) and next prime (12780211).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12780204² = 326667228563232, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532497 + ... + 532520.

It is an arithmetic number, because the mean of its divisors is an integer number (2485042).

Almost surely, 2^12780204 is an apocalyptic number.

It is an amenable number.

12780204 is an abundant number, since it is smaller than the sum of its proper divisors (17040300).

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

12780204 is a wasteful number, since it uses less digits than its factorization.

12780204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065024 (or 1065022 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 12780204 is about 3574.9411183962. The cubic root of 12780204 is about 233.8007654713.

Adding to 12780204 its reverse (40208721), we get a palindrome (52988925).

The spelling of 12780204 in words is "twelve million, seven hundred eighty thousand, two hundred four".