8168140 has 24 divisors (see below), whose sum is σ = 17745840. Its totient is φ = 3154368.

The previous prime is 8168117. The next prime is 8168161. The reversal of 8168140 is 418618.

8168140 = T₇₃₆ + T₇₃₇ + ... + T₇₆₄.

It is a super-2 number, since 2×8168140² = 133437022119200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8168099 and 8168108.

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, 6462 + ... + 7621.

It is an arithmetic number, because the mean of its divisors is an integer number (739410).

Almost surely, 2^8168140 is an apocalyptic number.

It is an amenable number.

8168140 is an abundant number, since it is smaller than the sum of its proper divisors (9577700).

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

8168140 is a wasteful number, since it uses less digits than its factorization.

8168140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14121 (or 14119 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 8168140 is about 2857.9958012565. The cubic root of 8168140 is about 201.3914633643.

The spelling of 8168140 in words is "eight million, one hundred sixty-eight thousand, one hundred forty".