7999992 has 256 divisors, whose sum is σ = 30643200. Its totient is φ = 1866240.

The previous prime is 7999963. The next prime is 7999993. The reversal of 7999992 is 2999997.

7999992 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7999993) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 216198 + ... + 216234.

It is an arithmetic number, because the mean of its divisors is an integer number (119700).

Almost surely, 2^7999992 is an apocalyptic number.

7999992 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 7999992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15321600).

7999992 is an abundant number, since it is smaller than the sum of its proper divisors (22643208).

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

7999992 is a wasteful number, since it uses less digits than its factorization.

7999992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 73 counting only the distinct ones).

The product of its digits is 826686, while the sum is 54.

The square root of 7999992 is about 2828.4257105323. The cubic root of 7999992 is about 199.9999333333. Note that the first 4 decimals are identical.

It can be divided in two parts, 7 and 999992, that added together give a palindrome (999999).

The spelling of 7999992 in words is "seven million, nine hundred ninety-nine thousand, nine hundred ninety-two".