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18975084 = 2231581257
BaseRepresentation
bin100100001100…
…0100101101100
31022201000220220
41020120211230
514324200314
61514411340
7320166642
oct110304554
938630826
1018975084
11a790297
126430b50
133c14a7b
14273d192
1519ec3a9
hex121896c

18975084 has 12 divisors (see below), whose sum is σ = 44275224. Its totient is φ = 6325024.

The previous prime is 18975079. The next prime is 18975101. The reversal of 18975084 is 48057981.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790617 + ... + 790640.

It is an arithmetic number, because the mean of its divisors is an integer number (3689602).

Almost surely, 218975084 is an apocalyptic number.

It is an amenable number.

18975084 is an abundant number, since it is smaller than the sum of its proper divisors (25300140).

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

18975084 is a wasteful number, since it uses less digits than its factorization.

18975084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581264 (or 1581262 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 18975084 is about 4356.0399447204. The cubic root of 18975084 is about 266.7234719263.

The spelling of 18975084 in words is "eighteen million, nine hundred seventy-five thousand, eighty-four".

Divisors: 1 2 3 4 6 12 1581257 3162514 4743771 6325028 9487542 18975084