4243436736 has 448 divisors, whose sum is σ = 14831714304. Its totient is φ = 1038643200.

The previous prime is 4243436711. The next prime is 4243436753. The reversal of 4243436736 is 6376343424.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

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, 21540190 + ... + 21540386.

Almost surely, 2^4243436736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4243436736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7415857152).

4243436736 is an abundant number, since it is smaller than the sum of its proper divisors (10588277568).

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

4243436736 is a wasteful number, since it uses less digits than its factorization.

4243436736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 298 counting only the distinct ones).

The product of its digits is 870912, while the sum is 42.

The square root of 4243436736 is about 65141.6666658138. Note that the first 5 decimals coincide. The cubic root of 4243436736 is about 1618.9716503611.

The spelling of 4243436736 in words is "four billion, two hundred forty-three million, four hundred thirty-six thousand, seven hundred thirty-six".