8215992 has 80 divisors (see below), whose sum is σ = 23812800. Its totient is φ = 2643840.

The previous prime is 8215973. The next prime is 8215993. The reversal of 8215992 is 2995128.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8215993) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19884 + ... + 20292.

It is an arithmetic number, because the mean of its divisors is an integer number (297660).

Almost surely, 2^8215992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8215992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11906400).

8215992 is an abundant number, since it is smaller than the sum of its proper divisors (15596808).

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

8215992 is a wasteful number, since it uses less digits than its factorization.

8215992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 445 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 8215992 is about 2866.3551768753. The cubic root of 8215992 is about 201.7839732178.

It can be divided in two parts, 8 and 215992, that added together give a cube (216000 = 60³).

The spelling of 8215992 in words is "eight million, two hundred fifteen thousand, nine hundred ninety-two".