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38906823 = 3235310639
BaseRepresentation
bin1001010001101…
…0101111000111
32201012200010110
42110122233013
534430004243
63505524103
7651462654
oct224325707
981180113
1038906823
111aa642aa
1211043633
1380a30b7
14524ac2b
153637e33
hex251abc7

38906823 has 16 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 24339744.

The previous prime is 38906821. The next prime is 38906849. The reversal of 38906823 is 32860983.

It is not a de Polignac number, because 38906823 - 21 = 38906821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38906821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1663 + ... + 8976.

It is an arithmetic number, because the mean of its divisors is an integer number (3447360).

Almost surely, 238906823 is an apocalyptic number.

38906823 is a deficient number, since it is larger than the sum of its proper divisors (16250937).

38906823 is a wasteful number, since it uses less digits than its factorization.

38906823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10718.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 38906823 is about 6237.5334067242. The cubic root of 38906823 is about 338.8508580731.

The spelling of 38906823 in words is "thirty-eight million, nine hundred six thousand, eight hundred twenty-three".

Divisors: 1 3 23 53 69 159 1219 3657 10639 31917 244697 563867 734091 1691601 12968941 38906823