1224405680 has 40 divisors (see below), whose sum is σ = 2859004512. Its totient is φ = 487652864.

The previous prime is 1224405661. The next prime is 1224405709. The reversal of 1224405680 is 865044221.

It is a tau number, because it is divible by the number of its divisors (40).

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, 14204 + ... + 51483.

Almost surely, 2^1224405680 is an apocalyptic number.

1224405680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224405680 is an abundant number, since it is smaller than the sum of its proper divisors (1634598832).

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

1224405680 is a wasteful number, since it uses less digits than its factorization.

1224405680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65933 (or 65927 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 1224405680 is about 34991.5086842508. The cubic root of 1224405680 is about 1069.8144144897.

The spelling of 1224405680 in words is "one billion, two hundred twenty-four million, four hundred five thousand, six hundred eighty".