10638243 has 96 divisors (see below), whose sum is σ = 21669120. Its totient is φ = 5080320.

The previous prime is 10638241. The next prime is 10638263. The reversal of 10638243 is 34283601.

It is a happy number.

10638243 is a `hidden beast` number, since 1 + 0 + 638 + 24 + 3 = 666.

It is not a de Polignac number, because 10638243 - 2¹ = 10638241 is a prime.

It is a super-2 number, since 2×10638243² = 226344428254098, which contains 22 as substring.

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 Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10638241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 247380 + ... + 247422.

It is an arithmetic number, because the mean of its divisors is an integer number (225720).

Almost surely, 2^10638243 is an apocalyptic number.

10638243 is an abundant number, since it is smaller than the sum of its proper divisors (11030877).

10638243 is a wasteful number, since it uses less digits than its factorization.

10638243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 10638243 is about 3261.6319534859. The cubic root of 10638243 is about 219.9327824952.

The spelling of 10638243 in words is "ten million, six hundred thirty-eight thousand, two hundred forty-three".