7820836 has 12 divisors (see below), whose sum is σ = 14158620. Its totient is φ = 3775520.

The previous prime is 7820821. The next prime is 7820881. The reversal of 7820836 is 6380287.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4435236 + 3385600 = 2106^2 + 1840^2 .

It is a super-2 number, since 2×7820836² = 122330951477792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33595 + ... + 33826.

It is an arithmetic number, because the mean of its divisors is an integer number (1179885).

Almost surely, 2^7820836 is an apocalyptic number.

It is an amenable number.

7820836 is a deficient number, since it is larger than the sum of its proper divisors (6337784).

7820836 is a wasteful number, since it uses less digits than its factorization.

7820836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67454 (or 67452 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 7820836 is about 2796.5757633220. The cubic root of 7820836 is about 198.4956801442.

The spelling of 7820836 in words is "seven million, eight hundred twenty thousand, eight hundred thirty-six".