7790138 has 8 divisors (see below), whose sum is σ = 11957088. Its totient is φ = 3804444.

The previous prime is 7790137. The next prime is 7790143. The reversal of 7790138 is 8310977.

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

It is a junction number, because it is equal to n+sod(n) for n = 7790098 and 7790107.

It is not an unprimeable number, because it can be changed into a prime (7790137) 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, 45206 + ... + 45377.

It is an arithmetic number, because the mean of its divisors is an integer number (1494636).

Almost surely, 2^7790138 is an apocalyptic number.

7790138 is a deficient number, since it is larger than the sum of its proper divisors (4166950).

7790138 is a wasteful number, since it uses less digits than its factorization.

7790138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90628.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 7790138 is about 2791.0818690966. The cubic root of 7790138 is about 198.2356307769.

The spelling of 7790138 in words is "seven million, seven hundred ninety thousand, one hundred thirty-eight".