1223985750 has 128 divisors (see below), whose sum is σ = 3361333248. Its totient is φ = 294768000.

The previous prime is 1223985727. The next prime is 1223985769. The reversal of 1223985750 is 575893221.

It is a happy number.

It is a super-2 number, since 2×1223985750² = 2996282232406125000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 456915 + ... + 459585.

It is an arithmetic number, because the mean of its divisors is an integer number (26260416).

Almost surely, 2^1223985750 is an apocalyptic number.

1223985750 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 1223985750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680666624).

1223985750 is an abundant number, since it is smaller than the sum of its proper divisors (2137347498).

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

1223985750 is a wasteful number, since it uses less digits than its factorization.

1223985750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751 (or 2741 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 1223985750 is about 34985.5077139092. The cubic root of 1223985750 is about 1069.6920970413.

The spelling of 1223985750 in words is "one billion, two hundred twenty-three million, nine hundred eighty-five thousand, seven hundred fifty".