1215204 has 12 divisors (see below), whose sum is σ = 2835504. Its totient is φ = 405064.

The previous prime is 1215197. The next prime is 1215209. The reversal of 1215204 is 4025121.

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

It is not an unprimeable number, because it can be changed into a prime (1215209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50622 + ... + 50645.

It is an arithmetic number, because the mean of its divisors is an integer number (236292).

2^1215204 is an apocalyptic number.

It is an amenable number.

1215204 is an abundant number, since it is smaller than the sum of its proper divisors (1620300).

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

1215204 is a wasteful number, since it uses less digits than its factorization.

1215204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101274 (or 101272 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1215204 is about 1102.3629166477. The cubic root of 1215204 is about 106.7127708683.

The spelling of 1215204 in words is "one million, two hundred fifteen thousand, two hundred four".