1215423224 has 16 divisors (see below), whose sum is σ = 2378002320. Its totient is φ = 581289280.

The previous prime is 1215423221. The next prime is 1215423233. The reversal of 1215423224 is 4223245121.

It is a super-2 number, since 2×1215423224² = 2954507226877108352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1215423193 and 1215423202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215423221) 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, 3302597 + ... + 3302964.

It is an arithmetic number, because the mean of its divisors is an integer number (148625145).

Almost surely, 2^1215423224 is an apocalyptic number.

It is an amenable number.

1215423224 is a deficient number, since it is larger than the sum of its proper divisors (1162579096).

1215423224 is a wasteful number, since it uses less digits than its factorization.

1215423224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6605590 (or 6605586 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 1215423224 is about 34862.9204743378. The cubic root of 1215423224 is about 1067.1918751212.

Adding to 1215423224 its reverse (4223245121), we get a palindrome (5438668345).

The spelling of 1215423224 in words is "one billion, two hundred fifteen million, four hundred twenty-three thousand, two hundred twenty-four".