8021732 has 18 divisors (see below), whose sum is σ = 14400834. Its totient is φ = 3909760.

The previous prime is 8021729. The next prime is 8021737. The reversal of 8021732 is 2371208.

It can be written as a sum of positive squares in 3 ways, for example, as 215296 + 7806436 = 464^2 + 2794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8021698 and 8021707.

It is not an unprimeable number, because it can be changed into a prime (8021737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6128 + ... + 7320.

Almost surely, 2^8021732 is an apocalyptic number.

8021732 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

8021732 is a deficient number, since it is larger than the sum of its proper divisors (6379102).

8021732 is a wasteful number, since it uses less digits than its factorization.

8021732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 8021732 is about 2832.2662304240. The cubic root of 8021732 is about 200.1809362610.

It can be divided in two parts, 80 and 21732, that added together give a palindrome (21812).

The spelling of 8021732 in words is "eight million, twenty-one thousand, seven hundred thirty-two".