1023965712 has 400 divisors, whose sum is σ = 3825659904. Its totient is φ = 256608000.

The previous prime is 1023965647. The next prime is 1023965753. The reversal of 1023965712 is 2175693201.

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 79 ways as a sum of consecutive naturals, for example, 3093387 + ... + 3093717.

Almost surely, 2^1023965712 is an apocalyptic number.

1023965712 is a gapful number since it is divisible by the number (12) 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 1023965712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1912829952).

1023965712 is an abundant number, since it is smaller than the sum of its proper divisors (2801694192).

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

1023965712 is a wasteful number, since it uses less digits than its factorization.

1023965712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 1023965712 is about 31999.4642455151. The cubic root of 1023965712 is about 1007.9255897453.

The spelling of 1023965712 in words is "one billion, twenty-three million, nine hundred sixty-five thousand, seven hundred twelve".