1223737680 has 80 divisors (see below), whose sum is σ = 4138467264. Its totient is φ = 296663040.

The previous prime is 1223737657. The next prime is 1223737717. The reversal of 1223737680 is 867373221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229129 + ... + 234408.

Almost surely, 2^1223737680 is an apocalyptic number.

1223737680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223737680 is an abundant number, since it is smaller than the sum of its proper divisors (2914729584).

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

1223737680 is a wasteful number, since it uses less digits than its factorization.

1223737680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463564 (or 463558 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 1223737680 is about 34981.9622091157. The cubic root of 1223737680 is about 1069.6198259255.

The spelling of 1223737680 in words is "one billion, two hundred twenty-three million, seven hundred thirty-seven thousand, six hundred eighty".