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10138578 = 231689763
BaseRepresentation
bin100110101011…
…001111010010
3201002002111220
4212223033102
510043413303
61001145510
7152114352
oct46531722
921062456
1010138578
1157a529a
12348b296
13213c978
1414bcb62
15d54053
hex9ab3d2

10138578 has 8 divisors (see below), whose sum is σ = 20277168. Its totient is φ = 3379524.

The previous prime is 10138577. The next prime is 10138621. The reversal of 10138578 is 87583101.

It is a sphenic number, since it is the product of 3 distinct primes.

10138578 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (10138573) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 844876 + ... + 844887.

It is an arithmetic number, because the mean of its divisors is an integer number (2534646).

Almost surely, 210138578 is an apocalyptic number.

10138578 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

10138578 is a wasteful number, since it uses less digits than its factorization.

10138578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689768.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 10138578 is about 3184.1133773784. The cubic root of 10138578 is about 216.4340978543.

It can be divided in two parts, 1013 and 8578, that added together give a triangular number (9591 = T138).

The spelling of 10138578 in words is "ten million, one hundred thirty-eight thousand, five hundred seventy-eight".

Divisors: 1 2 3 6 1689763 3379526 5069289 10138578