Search a number
-
+
72370124400 = 2435278615491
BaseRepresentation
bin100001101100110011…
…0000111011001110000
320220210121011020022210
41003121212013121300
52141203222440100
653125114532120
75141253623220
oct1033146073160
9226717136283
1072370124400
1128768059672
1212038737040
136a944a2b22
1437076da080
151d38734c50
hex10d9987670

72370124400 has 120 divisors (see below), whose sum is σ = 264943609984. Its totient is φ = 16541740800.

The previous prime is 72370124383. The next prime is 72370124413. The reversal of 72370124400 is 442107327.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4299346 + ... + 4316145.

Almost surely, 272370124400 is an apocalyptic number.

72370124400 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72370124400 is an abundant number, since it is smaller than the sum of its proper divisors (192573485584).

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

72370124400 is a wasteful number, since it uses less digits than its factorization.

72370124400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8615519 (or 8615508 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The spelling of 72370124400 in words is "seventy-two billion, three hundred seventy million, one hundred twenty-four thousand, four hundred".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 25 28 30 35 40 42 48 50 56 60 70 75 80 84 100 105 112 120 140 150 168 175 200 210 240 280 300 336 350 400 420 525 560 600 700 840 1050 1200 1400 1680 2100 2800 4200 8400 8615491 17230982 25846473 34461964 43077455 51692946 60308437 68923928 86154910 103385892 120616874 129232365 137847856 172309820 180925311 206771784 215387275 241233748 258464730 301542185 344619640 361850622 413543568 430774550 482467496 516929460 603084370 646161825 689239280 723701244 861549100 904626555 964934992 1033858920 1206168740 1292323650 1447402488 1507710925 1723098200 1809253110 2067717840 2412337480 2584647300 2894804976 3015421850 3446196400 3618506220 4523132775 4824674960 5169294600 6030843700 7237012440 9046265550 10338589200 12061687400 14474024880 18092531100 24123374800 36185062200 72370124400