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38634286471 = 113512207861
BaseRepresentation
bin100011111110110010…
…000110110110000111
310200201111020002201221
4203332302012312013
51113110334131341
625425350501211
72535252005464
oct437662066607
9120644202657
1038634286471
1115426058280
1275a2664807
133849149b51
141c2706266b
151011b65ed1
hex8fec86d87

38634286471 has 4 divisors (see below), whose sum is σ = 42146494344. Its totient is φ = 35122078600.

The previous prime is 38634286463. The next prime is 38634286477. The reversal of 38634286471 is 17468243683.

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

It is a cyclic number.

It is not a de Polignac number, because 38634286471 - 23 = 38634286463 is a prime.

It is a super-3 number, since 3×386342864713 (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38634286477) 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, 1756103920 + ... + 1756103941.

It is an arithmetic number, because the mean of its divisors is an integer number (10536623586).

Almost surely, 238634286471 is an apocalyptic number.

38634286471 is a deficient number, since it is larger than the sum of its proper divisors (3512207873).

38634286471 is a wasteful number, since it uses less digits than its factorization.

38634286471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512207872.

The product of its digits is 4644864, while the sum is 52.

The spelling of 38634286471 in words is "thirty-eight billion, six hundred thirty-four million, two hundred eighty-six thousand, four hundred seventy-one".

Divisors: 1 11 3512207861 38634286471