10138281 has 4 divisors (see below), whose sum is σ = 13517712. Its totient is φ = 6758852.

The previous prime is 10138253. The next prime is 10138301. The reversal of 10138281 is 18283101.

10138281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10138281 - 2⁶ = 10138217 is a prime.

It is a super-2 number, since 2×10138281² = 205569483269922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10138231) 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, 1689711 + ... + 1689716.

It is an arithmetic number, because the mean of its divisors is an integer number (3379428).

Almost surely, 2^10138281 is an apocalyptic number.

It is an amenable number.

10138281 is a deficient number, since it is larger than the sum of its proper divisors (3379431).

10138281 is an equidigital number, since it uses as much as digits as its factorization.

10138281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379430.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 10138281 is about 3184.0667392503. The cubic root of 10138281 is about 216.4319844233.

The spelling of 10138281 in words is "ten million, one hundred thirty-eight thousand, two hundred eighty-one".