1213070736 has 20 divisors (see below), whose sum is σ = 3133766192. Its totient is φ = 404356896.

The previous prime is 1213070723. The next prime is 1213070753. The reversal of 1213070736 is 6370703121.

It is a super-2 number, since 2×1213070736² = 2943081221079163392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12636106 + ... + 12636201.

Almost surely, 2^1213070736 is an apocalyptic number.

1213070736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1213070736 is an abundant number, since it is smaller than the sum of its proper divisors (1920695456).

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

1213070736 is a wasteful number, since it uses less digits than its factorization.

1213070736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25272318 (or 25272312 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 1213070736 is about 34829.1650201379. The cubic root of 1213070736 is about 1066.5029031576.

Adding to 1213070736 its reverse (6370703121), we get a palindrome (7583773857).

The spelling of 1213070736 in words is "one billion, two hundred thirteen million, seventy thousand, seven hundred thirty-six".