7863912 has 96 divisors (see below), whose sum is σ = 25444800. Its totient is φ = 2243808.

The previous prime is 7863881. The next prime is 7863931. The reversal of 7863912 is 2193687.

7863912 is a `hidden beast` number, since 7 + 8 + 639 + 12 = 666.

It is a super-2 number, since 2×7863912² = 123682223887488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is one of the 548 Lynch-Bell numbers.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10213 + ... + 10955.

It is an arithmetic number, because the mean of its divisors is an integer number (265050).

Almost surely, 2^7863912 is an apocalyptic number.

7863912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7863912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12722400).

7863912 is an abundant number, since it is smaller than the sum of its proper divisors (17580888).

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

7863912 is a wasteful number, since it uses less digits than its factorization.

7863912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 755 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 7863912 is about 2804.2667490808. The cubic root of 7863912 is about 198.8594413273.

The spelling of 7863912 in words is "seven million, eight hundred sixty-three thousand, nine hundred twelve".