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23969880 = 23325116053
BaseRepresentation
bin101101101110…
…0000001011000
31200002210111100
41123130001120
522114014010
62213431400
7410512014
oct133340130
950083440
1023969880
1112591a20
12803b560
134c7337c
14327d544
1521872c0
hex16dc058

23969880 has 96 divisors (see below), whose sum is σ = 84998160. Its totient is φ = 5809920.

The previous prime is 23969879. The next prime is 23969903. The reversal of 23969880 is 8896932.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 23 ways as a sum of consecutive naturals, for example, 934 + ... + 6986.

Almost surely, 223969880 is an apocalyptic number.

23969880 is a gapful number since it is divisible by the number (20) 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 23969880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42499080).

23969880 is an abundant number, since it is smaller than the sum of its proper divisors (61028280).

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

23969880 is a wasteful number, since it uses less digits than its factorization.

23969880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6081 (or 6074 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 23969880 is about 4895.9044108316. The cubic root of 23969880 is about 288.3291953327.

It can be divided in two parts, 239698 and 80, that added together give a triangular number (239778 = T692).

The spelling of 23969880 in words is "twenty-three million, nine hundred sixty-nine thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 11 12 15 18 20 22 24 30 33 36 40 44 45 55 60 66 72 88 90 99 110 120 132 165 180 198 220 264 330 360 396 440 495 660 792 990 1320 1980 3960 6053 12106 18159 24212 30265 36318 48424 54477 60530 66583 72636 90795 108954 121060 133166 145272 181590 199749 217908 242120 266332 272385 332915 363180 399498 435816 532664 544770 599247 665830 726360 798996 998745 1089540 1198494 1331660 1597992 1997490 2179080 2396988 2663320 2996235 3994980 4793976 5992470 7989960 11984940 23969880