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8161038 = 2321313461
BaseRepresentation
bin11111001000011100001110
3120100121211200
4133020130032
54042123123
6450530330
7126240054
oct37103416
916317750
108161038
114674566
1228969a6
1318c9822
1411261d4
15ab3143
hex7c870e

8161038 has 24 divisors (see below), whose sum is σ = 17822376. Its totient is φ = 2698800.

The previous prime is 8161031. The next prime is 8161039. The reversal of 8161038 is 8301618.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8161031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 628 + ... + 4088.

It is an arithmetic number, because the mean of its divisors is an integer number (742599).

Almost surely, 28161038 is an apocalyptic number.

8161038 is an abundant number, since it is smaller than the sum of its proper divisors (9661338).

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

8161038 is a wasteful number, since it uses less digits than its factorization.

8161038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3600 (or 3597 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 8161038 is about 2856.7530519805. The cubic root of 8161038 is about 201.3330781054. Note that the first 3 decimals are identical.

The spelling of 8161038 in words is "eight million, one hundred sixty-one thousand, thirty-eight".

Divisors: 1 2 3 6 9 18 131 262 393 786 1179 2358 3461 6922 10383 20766 31149 62298 453391 906782 1360173 2720346 4080519 8161038