8151816 has 16 divisors (see below), whose sum is σ = 20379600. Its totient is φ = 2717264.

The previous prime is 8151809. The next prime is 8151827. The reversal of 8151816 is 6181518.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169806 + ... + 169853.

It is an arithmetic number, because the mean of its divisors is an integer number (1273725).

Almost surely, 2^8151816 is an apocalyptic number.

It is an amenable number.

8151816 is an abundant number, since it is smaller than the sum of its proper divisors (12227784).

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

8151816 is a wasteful number, since it uses less digits than its factorization.

8151816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339668 (or 339664 counting only the distinct ones).

The product of its digits is 1920, while the sum is 30.

The square root of 8151816 is about 2855.1385255360. The cubic root of 8151816 is about 201.2572138407.

The spelling of 8151816 in words is "eight million, one hundred fifty-one thousand, eight hundred sixteen".