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38380123 = 2343151257
BaseRepresentation
bin1001001001101…
…0001001011011
32200012220122001
42102122021123
534311130443
63450341431
7644140255
oct222321133
980186561
1038380123
111a734611
1210a2a877
137c4a442
145150cd5
153581d4d
hex249a25b

38380123 has 16 divisors (see below), whose sum is σ = 41412096. Its totient is φ = 35481600.

The previous prime is 38380117. The next prime is 38380129. The reversal of 38380123 is 32108383.

It is an interprime number because it is at equal distance from previous prime (38380117) and next prime (38380129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-38380123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38380091 and 38380100.

It is not an unprimeable number, because it can be changed into a prime (38380129) 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, 149211 + ... + 149467.

It is an arithmetic number, because the mean of its divisors is an integer number (2588256).

Almost surely, 238380123 is an apocalyptic number.

38380123 is a deficient number, since it is larger than the sum of its proper divisors (3031973).

38380123 is a wasteful number, since it uses less digits than its factorization.

38380123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 38380123 is about 6195.1693277908. The cubic root of 38380123 is about 337.3148445770.

It can be divided in two parts, 38380 and 123, that added together give a triangular number (38503 = T277).

The spelling of 38380123 in words is "thirty-eight million, three hundred eighty thousand, one hundred twenty-three".

Divisors: 1 23 43 151 257 989 3473 5911 6493 11051 38807 149339 254173 892561 1668701 38380123