1224151620 has 48 divisors (see below), whose sum is σ = 3435613440. Its totient is φ = 325679616.

The previous prime is 1224151619. The next prime is 1224151681. The reversal of 1224151620 is 261514221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2421 + ... + 49539.

It is an arithmetic number, because the mean of its divisors is an integer number (71575280).

Almost surely, 2^1224151620 is an apocalyptic number.

1224151620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224151620 is an abundant number, since it is smaller than the sum of its proper divisors (2211461820).

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

1224151620 is a wasteful number, since it uses less digits than its factorization.

1224151620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47564 (or 47562 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1224151620 is about 34987.8781865949. The cubic root of 1224151620 is about 1069.7404150912.

Adding to 1224151620 its reverse (261514221), we get a palindrome (1485665841).

The spelling of 1224151620 in words is "one billion, two hundred twenty-four million, one hundred fifty-one thousand, six hundred twenty".