1240163216 has 20 divisors (see below), whose sum is σ = 2403786624. Its totient is φ = 619831200.

The previous prime is 1240163189. The next prime is 1240163219. The reversal of 1240163216 is 6123610421.

It is not an unprimeable number, because it can be changed into a prime (1240163219) 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, 29081 + ... + 57671.

Almost surely, 2^1240163216 is an apocalyptic number.

1240163216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1240163216 is a deficient number, since it is larger than the sum of its proper divisors (1163623408).

1240163216 is a wasteful number, since it uses less digits than its factorization.

1240163216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31310 (or 31304 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1240163216 is about 35215.9511585304. The cubic root of 1240163216 is about 1074.3842057488.

Adding to 1240163216 its reverse (6123610421), we get a palindrome (7363773637).

The spelling of 1240163216 in words is "one billion, two hundred forty million, one hundred sixty-three thousand, two hundred sixteen".