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38670469 = 181213649
BaseRepresentation
bin1001001110000…
…1000010000101
32200202122220121
42103201002011
534344423334
63500501541
7646456615
oct223410205
980678817
1038670469
111a912772
1210b4a8b1
13801c646
1451c8a45
1535dcdb4
hex24e1085

38670469 has 4 divisors (see below), whose sum is σ = 38884300. Its totient is φ = 38456640.

The previous prime is 38670451. The next prime is 38670473. The reversal of 38670469 is 96407683.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6066369 + 32604100 = 2463^2 + 5710^2 .

It is a cyclic number.

It is not a de Polignac number, because 38670469 - 27 = 38670341 is a prime.

It is a super-2 number, since 2×386704692 = 2990810345359922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38670409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106644 + ... + 107005.

It is an arithmetic number, because the mean of its divisors is an integer number (9721075).

Almost surely, 238670469 is an apocalyptic number.

It is an amenable number.

38670469 is a deficient number, since it is larger than the sum of its proper divisors (213831).

38670469 is a wasteful number, since it uses less digits than its factorization.

38670469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213830.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 38670469 is about 6218.5584342354. The cubic root of 38670469 is about 338.1633053046.

The spelling of 38670469 in words is "thirty-eight million, six hundred seventy thousand, four hundred sixty-nine".

Divisors: 1 181 213649 38670469