8151930 has 48 divisors (see below), whose sum is σ = 21607560. Its totient is φ = 2131584.

The previous prime is 8151917. The next prime is 8151937. The reversal of 8151930 is 391518.

It can be written as a sum of positive squares in 4 ways, for example, as 6155361 + 1996569 = 2481^2 + 1413^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8151894 and 8151903.

It is not an unprimeable number, because it can be changed into a prime (8151937) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3916 + ... + 5624.

Almost surely, 2^8151930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8151930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10803780).

8151930 is an abundant number, since it is smaller than the sum of its proper divisors (13455630).

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

8151930 is a wasteful number, since it uses less digits than its factorization.

8151930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775 (or 1772 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 8151930 is about 2855.1584894713. The cubic root of 8151930 is about 201.2581520044.

The spelling of 8151930 in words is "eight million, one hundred fifty-one thousand, nine hundred thirty".