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19230372 = 2234761139
BaseRepresentation
bin100100101011…
…0111010100100
31100012000010000
41021112322210
514410332442
61524101300
7322312140
oct111267244
940160100
1019230372
11a945077
126534830
133ca4025
1427a8220
151a4cd4c
hex1256ea4

19230372 has 120 divisors (see below), whose sum is σ = 58815680. Its totient is φ = 5365440.

The previous prime is 19230371. The next prime is 19230373. The reversal of 19230372 is 27303291.

It is an interprime number because it is at equal distance from previous prime (19230371) and next prime (19230373).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (19230371) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 138279 + ... + 138417.

Almost surely, 219230372 is an apocalyptic number.

19230372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19230372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29407840).

19230372 is an abundant number, since it is smaller than the sum of its proper divisors (39585308).

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

19230372 is a wasteful number, since it uses less digits than its factorization.

19230372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 19230372 is about 4385.2448050251. The cubic root of 19230372 is about 267.9143002139.

The spelling of 19230372 in words is "nineteen million, two hundred thirty thousand, three hundred seventy-two".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 61 63 81 84 108 122 126 139 162 183 189 244 252 278 324 366 378 417 427 549 556 567 732 756 834 854 973 1098 1134 1251 1281 1647 1668 1708 1946 2196 2268 2502 2562 2919 3294 3753 3843 3892 4941 5004 5124 5838 6588 7506 7686 8479 8757 9882 11259 11529 11676 15012 15372 16958 17514 19764 22518 23058 25437 26271 33916 34587 35028 45036 46116 50874 52542 59353 69174 76311 78813 101748 105084 118706 138348 152622 157626 178059 228933 237412 305244 315252 356118 457866 534177 686799 712236 915732 1068354 1373598 1602531 2136708 2747196 3205062 4807593 6410124 9615186 19230372