10216538 has 4 divisors (see below), whose sum is σ = 15324810. Its totient is φ = 5108268.

The previous prime is 10216537. The next prime is 10216543. The reversal of 10216538 is 83561201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9840769 + 375769 = 3137^2 + 613^2 .

It is not an unprimeable number, because it can be changed into a prime (10216537) by changing a digit.

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 as a sum of consecutive naturals, namely, 2554133 + ... + 2554136.

Almost surely, 2^10216538 is an apocalyptic number.

10216538 is a deficient number, since it is larger than the sum of its proper divisors (5108272).

10216538 is an equidigital number, since it uses as much as digits as its factorization.

10216538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108271.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 10216538 is about 3196.3319602319. The cubic root of 10216538 is about 216.9874344129.

Adding to 10216538 its reverse (83561201), we get a palindrome (93777739).

The spelling of 10216538 in words is "ten million, two hundred sixteen thousand, five hundred thirty-eight".