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18495148 = 2272197479
BaseRepresentation
bin100011010001…
…1011010101100
31021210122120111
41012203122230
514213321043
61500225404
7313130500
oct106433254
937718514
1018495148
11a492751
12623b264
133aa7499
142656300
15195509d
hex11a36ac

18495148 has 36 divisors (see below), whose sum is σ = 37920960. Its totient is φ = 7869792.

The previous prime is 18495131. The next prime is 18495157. The reversal of 18495148 is 84159481.

It is a self number, because there is not a number n which added to its sum of digits gives 18495148.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38373 + ... + 38851.

It is an arithmetic number, because the mean of its divisors is an integer number (1053360).

Almost surely, 218495148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18495148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18960480).

18495148 is an abundant number, since it is smaller than the sum of its proper divisors (19425812).

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

18495148 is a wasteful number, since it uses less digits than its factorization.

18495148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 685 counting only the distinct ones).

The product of its digits is 46080, while the sum is 40.

The square root of 18495148 is about 4300.5985629910. The cubic root of 18495148 is about 264.4554999863.

The spelling of 18495148 in words is "eighteen million, four hundred ninety-five thousand, one hundred forty-eight".

Divisors: 1 2 4 7 14 28 49 98 196 197 394 479 788 958 1379 1916 2758 3353 5516 6706 9653 13412 19306 23471 38612 46942 93884 94363 188726 377452 660541 1321082 2642164 4623787 9247574 18495148