7820738 has 8 divisors (see below), whose sum is σ = 11750160. Its totient is φ = 3904020.

The previous prime is 7820719. The next prime is 7820783. The reversal of 7820738 is 8370287.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7820738² = 122327885729288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7820698 and 7820707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1448 + ... + 4211.

It is an arithmetic number, because the mean of its divisors is an integer number (1468770).

Almost surely, 2^7820738 is an apocalyptic number.

7820738 is a deficient number, since it is larger than the sum of its proper divisors (3929422).

7820738 is a wasteful number, since it uses less digits than its factorization.

7820738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6352.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 7820738 is about 2796.5582418394. The cubic root of 7820738 is about 198.4948510488.

It can be divided in two parts, 7820 and 738, that added together give a palindrome (8558).

The spelling of 7820738 in words is "seven million, eight hundred twenty thousand, seven hundred thirty-eight".