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19530396 = 223571283
BaseRepresentation
bin100101010000…
…0001010011100
31100202020200000
41022200022130
514444433041
61534334300
7325001634
oct112401234
940666600
1019530396
111002a526
12665a390
13407a762
1428456c4
151aabbb6
hex12a029c

19530396 has 72 divisors (see below), whose sum is σ = 52101504. Its totient is φ = 6395760.

The previous prime is 19530373. The next prime is 19530409. The reversal of 19530396 is 69303591.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 19530396.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68871 + ... + 69153.

It is an arithmetic number, because the mean of its divisors is an integer number (723632).

Almost surely, 219530396 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 19530396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26050752).

19530396 is an abundant number, since it is smaller than the sum of its proper divisors (32571108).

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

19530396 is a wasteful number, since it uses less digits than its factorization.

19530396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 19530396 is about 4419.3207622892. The cubic root of 19530396 is about 269.3004111040.

The spelling of 19530396 in words is "nineteen million, five hundred thirty thousand, three hundred ninety-six".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 71 81 108 142 162 213 243 283 284 324 426 486 566 639 849 852 972 1132 1278 1698 1917 2547 2556 3396 3834 5094 5751 7641 7668 10188 11502 15282 17253 20093 22923 23004 30564 34506 40186 45846 60279 68769 69012 80372 91692 120558 137538 180837 241116 275076 361674 542511 723348 1085022 1627533 2170044 3255066 4882599 6510132 9765198 19530396