8021560 has 32 divisors (see below), whose sum is σ = 18633600. Its totient is φ = 3104640.

The previous prime is 8021539. The next prime is 8021567. The reversal of 8021560 is 651208.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8021567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1995 + ... + 4474.

It is an arithmetic number, because the mean of its divisors is an integer number (582300).

Almost surely, 2^8021560 is an apocalyptic number.

It is an amenable number.

8021560 is an abundant number, since it is smaller than the sum of its proper divisors (10612040).

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

8021560 is a wasteful number, since it uses less digits than its factorization.

8021560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6511 (or 6507 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 8021560 is about 2832.2358658841. The cubic root of 8021560 is about 200.1795055073.

Adding to 8021560 its reverse (651208), we get a palindrome (8672768).

The spelling of 8021560 in words is "eight million, twenty-one thousand, five hundred sixty".