8021572 has 48 divisors (see below), whose sum is σ = 16652160. Its totient is φ = 3345408.

The previous prime is 8021567. The next prime is 8021579. The reversal of 8021572 is 2751208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8021579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22548 + ... + 22900.

It is an arithmetic number, because the mean of its divisors is an integer number (346920).

Almost surely, 2^8021572 is an apocalyptic number.

It is an amenable number.

8021572 is an abundant number, since it is smaller than the sum of its proper divisors (8630588).

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

8021572 is a wasteful number, since it uses less digits than its factorization.

8021572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 8021572 is about 2832.2379843509. The cubic root of 8021572 is about 200.1796053280.

The spelling of 8021572 in words is "eight million, twenty-one thousand, five hundred seventy-two".