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19072984 = 237421809
BaseRepresentation
bin100100011000…
…0011111011000
31022220000012211
41020300133120
514340313414
61520444504
7321055240
oct110603730
938800184
1019072984
11a8478a7
126479734
133c4a4b8
142766b20
151a1b3c4
hex12307d8

19072984 has 32 divisors (see below), whose sum is σ = 41018400. Its totient is φ = 8144640.

The previous prime is 19072973. The next prime is 19072993. The reversal of 19072984 is 48927091.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23172 + ... + 23980.

It is an arithmetic number, because the mean of its divisors is an integer number (1281825).

Almost surely, 219072984 is an apocalyptic number.

19072984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19072984 is an abundant number, since it is smaller than the sum of its proper divisors (21945416).

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

19072984 is a wasteful number, since it uses less digits than its factorization.

19072984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 19072984 is about 4367.2627582961. The cubic root of 19072984 is about 267.1813960896.

The spelling of 19072984 in words is "nineteen million, seventy-two thousand, nine hundred eighty-four".

Divisors: 1 2 4 7 8 14 28 56 421 809 842 1618 1684 2947 3236 3368 5663 5894 6472 11326 11788 22652 23576 45304 340589 681178 1362356 2384123 2724712 4768246 9536492 19072984