7992820 has 48 divisors (see below), whose sum is σ = 18724608. Its totient is φ = 2840960.

The previous prime is 7992791. The next prime is 7992821. The reversal of 7992820 is 282997.

7992820 = T₁₂₀₀ + T₁₂₀₁ + ... + T₁₂₁₀.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7992820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7992821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9954 + ... + 10726.

It is an arithmetic number, because the mean of its divisors is an integer number (390096).

Almost surely, 2^7992820 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 7992820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9362304).

7992820 is an abundant number, since it is smaller than the sum of its proper divisors (10731788).

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

7992820 is a wasteful number, since it uses less digits than its factorization.

7992820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 838 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7992820 is about 2827.1575831566. The cubic root of 7992820 is about 199.9401487576.

The spelling of 7992820 in words is "seven million, nine hundred ninety-two thousand, eight hundred twenty".