4581272826 has 96 divisors (see below), whose sum is σ = 10887261840. Its totient is φ = 1383754752.

The previous prime is 4581272821. The next prime is 4581272827. The reversal of 4581272826 is 6282721854.

4581272826 is a `hidden beast` number, since 4 + 581 + 27 + 28 + 26 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1303137801 + 3278135025 = 36099^2 + 57255^2 .

It is not an unprimeable number, because it can be changed into a prime (4581272821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4594560 + ... + 4595556.

Almost surely, 2^4581272826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4581272826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5443630920).

4581272826 is an abundant number, since it is smaller than the sum of its proper divisors (6305989014).

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

4581272826 is a wasteful number, since it uses less digits than its factorization.

4581272826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1357 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 4581272826 is about 67685.1004727037. The cubic root of 4581272826 is about 1660.8435285635.

The spelling of 4581272826 in words is "four billion, five hundred eighty-one million, two hundred seventy-two thousand, eight hundred twenty-six".