1240216680 has 64 divisors (see below), whose sum is σ = 3724761600. Its totient is φ = 330359040.

The previous prime is 1240216669. The next prime is 1240216687. The reversal of 1240216680 is 866120421.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1240216687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113706 + ... + 124134.

It is an arithmetic number, because the mean of its divisors is an integer number (58199400).

Almost surely, 2^1240216680 is an apocalyptic number.

1240216680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240216680 is an abundant number, since it is smaller than the sum of its proper divisors (2484544920).

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

1240216680 is a wasteful number, since it uses less digits than its factorization.

1240216680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11434 (or 11430 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1240216680 is about 35216.7102381810. The cubic root of 1240216680 is about 1074.3996445907.

The spelling of 1240216680 in words is "one billion, two hundred forty million, two hundred sixteen thousand, six hundred eighty".