10391238 has 72 divisors (see below), whose sum is σ = 26723424. Its totient is φ = 2898720.

The previous prime is 10391221. The next prime is 10391279. The reversal of 10391238 is 83219301.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 35 ways as a sum of consecutive naturals, for example, 28131 + ... + 28497.

Almost surely, 2^10391238 is an apocalyptic number.

10391238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10391238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13361712).

10391238 is an abundant number, since it is smaller than the sum of its proper divisors (16332186).

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

10391238 is a wasteful number, since it uses less digits than its factorization.

10391238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 10391238 is about 3223.5443226362. The cubic root of 10391238 is about 218.2172594888.

The spelling of 10391238 in words is "ten million, three hundred ninety-one thousand, two hundred thirty-eight".