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10038881 = 80912409
BaseRepresentation
bin100110010010…
…111001100001
3200220000202102
4212102321201
510032221011
6555100145
7151220606
oct46227141
920800672
1010038881
1157373a6
123441655
132106488
1414946ad
15d3473b
hex992e61

10038881 has 4 divisors (see below), whose sum is σ = 10052100. Its totient is φ = 10025664.

The previous prime is 10038869. The next prime is 10038883. The reversal of 10038881 is 18883001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18883001 = 41460561.

It can be written as a sum of positive squares in 2 ways, for example, as 4080400 + 5958481 = 2020^2 + 2441^2 .

It is a cyclic number.

It is not a de Polignac number, because 10038881 - 26 = 10038817 is a prime.

It is a super-2 number, since 2×100388812 = 201558263464322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10038883) 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 3 ways as a sum of consecutive naturals, for example, 5396 + ... + 7013.

It is an arithmetic number, because the mean of its divisors is an integer number (2513025).

Almost surely, 210038881 is an apocalyptic number.

It is an amenable number.

10038881 is a deficient number, since it is larger than the sum of its proper divisors (13219).

10038881 is an equidigital number, since it uses as much as digits as its factorization.

10038881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13218.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 10038881 is about 3168.4193219964. The cubic root of 10038881 is about 215.7223298192.

The spelling of 10038881 in words is "ten million, thirty-eight thousand, eight hundred eighty-one".

Divisors: 1 809 12409 10038881