1223988570 has 192 divisors, whose sum is σ = 3854462976. Its totient is φ = 273637440.

The previous prime is 1223988517. The next prime is 1223988589. The reversal of 1223988570 is 758893221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 798705 + ... + 800235.

It is an arithmetic number, because the mean of its divisors is an integer number (20075328).

Almost surely, 2^1223988570 is an apocalyptic number.

1223988570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223988570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1927231488).

1223988570 is an abundant number, since it is smaller than the sum of its proper divisors (2630474406).

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

1223988570 is a wasteful number, since it uses less digits than its factorization.

1223988570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607 (or 1595 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1223988570 is about 34985.5480162881. The cubic root of 1223988570 is about 1069.6929185458.

The spelling of 1223988570 in words is "one billion, two hundred twenty-three million, nine hundred eighty-eight thousand, five hundred seventy".