10281538 has 4 divisors (see below), whose sum is σ = 15422310. Its totient is φ = 5140768.

The previous prime is 10281521. The next prime is 10281559. The reversal of 10281538 is 83518201.

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., 5774409 + 4507129 = 2403^2 + 2123^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2570383 + ... + 2570386.

Almost surely, 2^10281538 is an apocalyptic number.

10281538 is a deficient number, since it is larger than the sum of its proper divisors (5140772).

10281538 is an equidigital number, since it uses as much as digits as its factorization.

10281538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140771.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 10281538 is about 3206.4837439164. The cubic root of 10281538 is about 217.4466368403.

Adding to 10281538 its reverse (83518201), we get a palindrome (93799739).

The spelling of 10281538 in words is "ten million, two hundred eighty-one thousand, five hundred thirty-eight".