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19480972 = 227695749
BaseRepresentation
bin100101001010…
…0000110001100
31100122201212111
41022110012030
514441342342
61533313404
7324404560
oct112240614
940581774
1019480972
11aaa6385
126635864
134061104
1428316a0
151a9c217
hex129418c

19480972 has 12 divisors (see below), whose sum is σ = 38962000. Its totient is φ = 8348976.

The previous prime is 19480969. The next prime is 19480973. The reversal of 19480972 is 27908491.

19480972 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (19480973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347847 + ... + 347902.

Almost surely, 219480972 is an apocalyptic number.

It is an amenable number.

19480972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19480972 is a wasteful number, since it uses less digits than its factorization.

19480972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695760 (or 695758 counting only the distinct ones).

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

The square root of 19480972 is about 4413.7254105800. The cubic root of 19480972 is about 269.0730535914.

The spelling of 19480972 in words is "nineteen million, four hundred eighty thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 28 695749 1391498 2782996 4870243 9740486 19480972