8040711280 has 80 divisors (see below), whose sum is σ = 21445145280. Its totient is φ = 2746515456.

The previous prime is 8040711257. The next prime is 8040711313. The reversal of 8040711280 is 821170408.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 123952 + ... + 177328.

It is an arithmetic number, because the mean of its divisors is an integer number (268064316).

Almost surely, 2^8040711280 is an apocalyptic number.

8040711280 is a gapful number since it is divisible by the number (80) 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 8040711280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10722572640).

8040711280 is an abundant number, since it is smaller than the sum of its proper divisors (13404434000).

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

8040711280 is a wasteful number, since it uses less digits than its factorization.

8040711280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53666 (or 53660 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 8040711280 is about 89670.0132708811. The cubic root of 8040711280 is about 2003.3868679917.

Adding to 8040711280 its reverse (821170408), we get a palindrome (8861881688).

The spelling of 8040711280 in words is "eight billion, forty million, seven hundred eleven thousand, two hundred eighty".