4020505280 has 112 divisors (see below), whose sum is σ = 10525109760. Its totient is φ = 1450675200.

The previous prime is 4020505267. The next prime is 4020505301. The reversal of 4020505280 is 825050204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456761 + ... + 465479.

Almost surely, 2^4020505280 is an apocalyptic number.

4020505280 is a gapful number since it is divisible by the number (40) 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 4020505280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5262554880).

4020505280 is an abundant number, since it is smaller than the sum of its proper divisors (6504604480).

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

4020505280 is a wasteful number, since it uses less digits than its factorization.

4020505280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8878 (or 8868 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 4020505280 is about 63407.4544513498. The cubic root of 4020505280 is about 1590.1089386483.

Adding to 4020505280 its reverse (825050204), we get a palindrome (4845555484).

The spelling of 4020505280 in words is "four billion, twenty million, five hundred five thousand, two hundred eighty".