1229215 has 8 divisors (see below), whose sum is σ = 1588608. Its totient is φ = 907680.

The previous prime is 1229213. The next prime is 1229227. The reversal of 1229215 is 5129221.

1229215 = 85² + 86² + ... + 162².

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

It is not a de Polignac number, because 1229215 - 2¹ = 1229213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9391 + ... + 9520.

It is an arithmetic number, because the mean of its divisors is an integer number (198576).

2^1229215 is an apocalyptic number.

1229215 is a deficient number, since it is larger than the sum of its proper divisors (359393).

1229215 is a wasteful number, since it uses less digits than its factorization.

1229215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18929.

The product of its digits is 360, while the sum is 22.

The square root of 1229215 is about 1108.6996888247. The cubic root of 1229215 is about 107.1213285845.

It can be divided in two parts, 1229 and 215, that added together give a square (1444 = 38²).

The spelling of 1229215 in words is "one million, two hundred twenty-nine thousand, two hundred fifteen".