1223567280 has 240 divisors, whose sum is σ = 4499878656. Its totient is φ = 296110080.

The previous prime is 1223567249. The next prime is 1223567281. The reversal of 1223567280 is 827653221.

1223567280 is a `hidden beast` number, since 1 + 22 + 356 + 7 + 280 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is not an unprimeable number, because it can be changed into a prime (1223567281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 569889 + ... + 572031.

Almost surely, 2^1223567280 is an apocalyptic number.

1223567280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223567280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2249939328).

1223567280 is an abundant number, since it is smaller than the sum of its proper divisors (3276311376).

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

1223567280 is a wasteful number, since it uses less digits than its factorization.

1223567280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236 (or 2227 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1223567280 is about 34979.5265834173. The cubic root of 1223567280 is about 1069.5701770283.

The spelling of 1223567280 in words is "one billion, two hundred twenty-three million, five hundred sixty-seven thousand, two hundred eighty".