7820944 has 20 divisors (see below), whose sum is σ = 15249024. Its totient is φ = 3885728.

The previous prime is 7820929. The next prime is 7820947. The reversal of 7820944 is 4490287.

It is a happy number.

It is a super-2 number, since 2×7820944² = 122334330102272, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7820947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1209 + ... + 4135.

Almost surely, 2^7820944 is an apocalyptic number.

It is an amenable number.

7820944 is a deficient number, since it is larger than the sum of its proper divisors (7428080).

7820944 is a wasteful number, since it uses less digits than its factorization.

7820944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102 (or 3096 counting only the distinct ones).

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

The square root of 7820944 is about 2796.5950725838. The cubic root of 7820944 is about 198.4965938332.

The spelling of 7820944 in words is "seven million, eight hundred twenty thousand, nine hundred forty-four".