7836420 has 48 divisors (see below), whose sum is σ = 22131648. Its totient is φ = 2071680.

The previous prime is 7836419. The next prime is 7836427. The reversal of 7836420 is 246387.

It is a super-2 number, since 2×7836420² = 122818956832800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (7836427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7362 + ... + 8358.

It is an arithmetic number, because the mean of its divisors is an integer number (461076).

Almost surely, 2^7836420 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 7836420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11065824).

7836420 is an abundant number, since it is smaller than the sum of its proper divisors (14295228).

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

7836420 is a wasteful number, since it uses less digits than its factorization.

7836420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 7836420 is about 2799.3606412894. The cubic root of 7836420 is about 198.6274352114.

It can be divided in two parts, 7836 and 420, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 7836420 in words is "seven million, eight hundred thirty-six thousand, four hundred twenty".