7876820 has 24 divisors (see below), whose sum is σ = 18904704. Its totient is φ = 2700576.

The previous prime is 7876801. The next prime is 7876823. The reversal of 7876820 is 286787.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7876823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27992 + ... + 28271.

It is an arithmetic number, because the mean of its divisors is an integer number (787696).

Almost surely, 2^7876820 is an apocalyptic number.

7876820 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7876820 is an abundant number, since it is smaller than the sum of its proper divisors (11027884).

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

7876820 is a wasteful number, since it uses less digits than its factorization.

7876820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56279 (or 56277 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 7876820 is about 2806.5672983201. The cubic root of 7876820 is about 198.9681859531.

The spelling of 7876820 in words is "seven million, eight hundred seventy-six thousand, eight hundred twenty".