10320138 has 12 divisors (see below), whose sum is σ = 22360338. Its totient is φ = 3440040.

The previous prime is 10320131. The next prime is 10320157. The reversal of 10320138 is 83102301.

10320138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9753129 + 567009 = 3123^2 + 753^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 573341 = 10320138 / (1 + 0 + 3 + 2 + 0 + 1 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 10320138.

It is not an unprimeable number, because it can be changed into a prime (10320131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 286653 + ... + 286688.

Almost surely, 2^10320138 is an apocalyptic number.

10320138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10320138 is an abundant number, since it is smaller than the sum of its proper divisors (12040200).

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

10320138 is a wasteful number, since it uses less digits than its factorization.

10320138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573349 (or 573346 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 10320138 is about 3212.4971595318. The cubic root of 10320138 is about 217.7184171322.

Adding to 10320138 its reverse (83102301), we get a palindrome (93422439).

The spelling of 10320138 in words is "ten million, three hundred twenty thousand, one hundred thirty-eight".