8151940 has 24 divisors (see below), whose sum is σ = 17519040. Its totient is φ = 3184608.

The previous prime is 8151937. The next prime is 8151943. The reversal of 8151940 is 491518.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8151937) and next prime (8151943).

It is a junction number, because it is equal to n+sod(n) for n = 8151899 and 8151908.

It is not an unprimeable number, because it can be changed into a prime (8151943) 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 7 ways as a sum of consecutive naturals, for example, 3880 + ... + 5599.

It is an arithmetic number, because the mean of its divisors is an integer number (729960).

Almost surely, 2^8151940 is an apocalyptic number.

It is an amenable number.

8151940 is an abundant number, since it is smaller than the sum of its proper divisors (9367100).

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

8151940 is a wasteful number, since it uses less digits than its factorization.

8151940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9531 (or 9529 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 8151940 is about 2855.1602406870. The cubic root of 8151940 is about 201.2582342991.

The spelling of 8151940 in words is "eight million, one hundred fifty-one thousand, nine hundred forty".