1244215530 has 24 divisors (see below), whose sum is σ = 3234960612. Its totient is φ = 331790784.

The previous prime is 1244215529. The next prime is 1244215543. The reversal of 1244215530 is 355124421.

1244215530 is a `hidden beast` number, since 124 + 4 + 2 + 1 + 5 + 530 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1038321729 + 205893801 = 32223^2 + 14349^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1244215494 and 1244215503.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6912219 + ... + 6912398.

Almost surely, 2^1244215530 is an apocalyptic number.

1244215530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1244215530 is an abundant number, since it is smaller than the sum of its proper divisors (1990745082).

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

1244215530 is a wasteful number, since it uses less digits than its factorization.

1244215530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13824630 (or 13824627 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1244215530 is about 35273.4394410298. The cubic root of 1244215530 is about 1075.5531402478.

Adding to 1244215530 its reverse (355124421), we get a palindrome (1599339951).

It can be divided in two parts, 12442 and 15530, that added together give a palindrome (27972).

The spelling of 1244215530 in words is "one billion, two hundred forty-four million, two hundred fifteen thousand, five hundred thirty".