8131722 has 16 divisors (see below), whose sum is σ = 16324320. Its totient is φ = 2700432.

The previous prime is 8131699. The next prime is 8131733. The reversal of 8131722 is 2271318.

It is a super-2 number, since 2×8131722² = 132249805370568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8131692 and 8131701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 697 + ... + 4092.

It is an arithmetic number, because the mean of its divisors is an integer number (1020270).

Almost surely, 2^8131722 is an apocalyptic number.

8131722 is an abundant number, since it is smaller than the sum of its proper divisors (8192598).

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

8131722 is a wasteful number, since it uses less digits than its factorization.

8131722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5077.

The product of its digits is 672, while the sum is 24.

The square root of 8131722 is about 2851.6174357722. The cubic root of 8131722 is about 201.0917133008.

The spelling of 8131722 in words is "eight million, one hundred thirty-one thousand, seven hundred twenty-two".