1218240336 has 40 divisors (see below), whose sum is σ = 3148887744. Its totient is φ = 405852160.

The previous prime is 1218240307. The next prime is 1218240403. The reversal of 1218240336 is 6330428121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94096 + ... + 106256.

Almost surely, 2^1218240336 is an apocalyptic number.

1218240336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1218240336 is an abundant number, since it is smaller than the sum of its proper divisors (1930647408).

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

1218240336 is a wasteful number, since it uses less digits than its factorization.

1218240336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14259 (or 14253 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1218240336 is about 34903.2997866964. The cubic root of 1218240336 is about 1068.0157525486.

Adding to 1218240336 its reverse (6330428121), we get a palindrome (7548668457).

The spelling of 1218240336 in words is "one billion, two hundred eighteen million, two hundred forty thousand, three hundred thirty-six".