10309238 has 4 divisors (see below), whose sum is σ = 15463860. Its totient is φ = 5154618.

The previous prime is 10309237. The next prime is 10309253. The reversal of 10309238 is 83290301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83290301 = 3853 ⋅21617.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10309237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2577308 + ... + 2577311.

It is an arithmetic number, because the mean of its divisors is an integer number (3865965).

Almost surely, 2^10309238 is an apocalyptic number.

10309238 is a deficient number, since it is larger than the sum of its proper divisors (5154622).

10309238 is an equidigital number, since it uses as much as digits as its factorization.

10309238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5154621.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 10309238 is about 3210.8002117852. The cubic root of 10309238 is about 217.6417396457.

Adding to 10309238 its reverse (83290301), we get a palindrome (93599539).

It can be divided in two parts, 10309 and 238, that multiplied together give a palindrome (2453542).

The spelling of 10309238 in words is "ten million, three hundred nine thousand, two hundred thirty-eight".