8019722 has 4 divisors (see below), whose sum is σ = 12029586. Its totient is φ = 4009860.

The previous prime is 8019721. The next prime is 8019727. The reversal of 8019722 is 2279108.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7134241 + 885481 = 2671^2 + 941^2 .

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (8019721) 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 as a sum of consecutive naturals, namely, 2004929 + ... + 2004932.

Almost surely, 2^8019722 is an apocalyptic number.

8019722 is a deficient number, since it is larger than the sum of its proper divisors (4009864).

8019722 is a wasteful number, since it uses less digits than its factorization.

8019722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009863.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 8019722 is about 2831.9113686696. The cubic root of 8019722 is about 200.1642151301.

The spelling of 8019722 in words is "eight million, nineteen thousand, seven hundred twenty-two".