8020740 has 144 divisors (see below), whose sum is σ = 28038528. Its totient is φ = 1677312.

The previous prime is 8020709. The next prime is 8020751. The reversal of 8020740 is 470208.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70924 + ... + 71036.

It is an arithmetic number, because the mean of its divisors is an integer number (194712).

Almost surely, 2^8020740 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 8020740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14019264).

8020740 is an abundant number, since it is smaller than the sum of its proper divisors (20017788).

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

8020740 is a wasteful number, since it uses less digits than its factorization.

8020740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 8020740 is about 2832.0911002297. The cubic root of 8020740 is about 200.1726841913.

Adding to 8020740 its reverse (470208), we get a palindrome (8490948).

The spelling of 8020740 in words is "eight million, twenty thousand, seven hundred forty".