1223743680 has 112 divisors (see below), whose sum is σ = 4317126240. Its totient is φ = 326329344.

The previous prime is 1223743639. The next prime is 1223743739. The reversal of 1223743680 is 863473221.

It is a happy number.

1223743680 is a `hidden beast` number, since 1 + 223 + 74 + 368 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62179 + ... + 79458.

It is an arithmetic number, because the mean of its divisors is an integer number (38545770).

Almost surely, 2^1223743680 is an apocalyptic number.

1223743680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223743680 is an abundant number, since it is smaller than the sum of its proper divisors (3093382560).

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

1223743680 is a wasteful number, since it uses less digits than its factorization.

1223743680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141663 (or 141647 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 1223743680 is about 34982.0479674933. The cubic root of 1223743680 is about 1069.6215740421.

The spelling of 1223743680 in words is "one billion, two hundred twenty-three million, seven hundred forty-three thousand, six hundred eighty".