4235256072 has 80 divisors (see below), whose sum is σ = 11914857900. Its totient is φ = 1405537920.

The previous prime is 4235256049. The next prime is 4235256079. The reversal of 4235256072 is 2706525324.

4235256072 is a `hidden beast` number, since 4 + 2 + 3 + 525 + 60 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4168768356 + 66487716 = 64566^2 + 8154^2 .

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 (4235256079) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 134122 + ... + 162662.

Almost surely, 2^4235256072 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 4235256072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5957428950).

4235256072 is an abundant number, since it is smaller than the sum of its proper divisors (7679601828).

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

4235256072 is a wasteful number, since it uses less digits than its factorization.

4235256072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28788 (or 28775 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The square root of 4235256072 is about 65078.8450419950. The cubic root of 4235256072 is about 1617.9306087097.

The spelling of 4235256072 in words is "four billion, two hundred thirty-five million, two hundred fifty-six thousand, seventy-two".