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19328925 = 3527113347
BaseRepresentation
bin100100110111…
…0111110011101
31100101000022010
41021232332131
514422011200
61530141433
7323202360
oct111567635
940330263
1019328925
11aa02120
126581879
134009b45
1427d20d7
151a6c150
hex126ef9d

19328925 has 48 divisors (see below), whose sum is σ = 39854592. Its totient is φ = 8030400.

The previous prime is 19328879. The next prime is 19328951. The reversal of 19328925 is 52982391.

It is not a de Polignac number, because 19328925 - 28 = 19328669 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4102 + ... + 7448.

It is an arithmetic number, because the mean of its divisors is an integer number (830304).

Almost surely, 219328925 is an apocalyptic number.

19328925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19328925 is an abundant number, since it is smaller than the sum of its proper divisors (20525667).

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

19328925 is a wasteful number, since it uses less digits than its factorization.

19328925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378 (or 3373 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 19328925 is about 4396.4673318472. The cubic root of 19328925 is about 268.3711951855.

The spelling of 19328925 in words is "nineteen million, three hundred twenty-eight thousand, nine hundred twenty-five".

Divisors: 1 3 5 7 11 15 21 25 33 35 55 75 77 105 165 175 231 275 385 525 825 1155 1925 3347 5775 10041 16735 23429 36817 50205 70287 83675 110451 117145 184085 251025 257719 351435 552255 585725 773157 920425 1288595 1757175 2761275 3865785 6442975 19328925