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20400407150 = 25217313312339
BaseRepresentation
bin10010111111111101…
…011000001001101110
31221122201222001121012
4102333331120021232
5313240001012100
613212151305222
71321353412454
oct227775301156
957581861535
1020400407150
118719552922
123b5407b212
131c0162c646
14db75549d4
157e5eb0135
hex4bff5826e

20400407150 has 96 divisors (see below), whose sum is σ = 41615907840. Its totient is φ = 7406784000.

The previous prime is 20400407147. The next prime is 20400407161. The reversal of 20400407150 is 5170400402.

It is a super-2 number, since 2×204004071502 (a number of 21 digits) contains 22 as substring.

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, 8720681 + ... + 8723019.

It is an arithmetic number, because the mean of its divisors is an integer number (433499040).

Almost surely, 220400407150 is an apocalyptic number.

20400407150 is an abundant number, since it is smaller than the sum of its proper divisors (21215500690).

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

20400407150 is a wasteful number, since it uses less digits than its factorization.

20400407150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

Adding to 20400407150 its reverse (5170400402), we get a palindrome (25570807552).

The spelling of 20400407150 in words is "twenty billion, four hundred million, four hundred seven thousand, one hundred fifty".

Divisors: 1 2 5 10 17 25 31 34 50 62 85 155 170 310 331 425 527 662 775 850 1054 1550 1655 2339 2635 3310 4678 5270 5627 8275 10261 11254 11695 13175 16550 20522 23390 26350 28135 39763 51305 56270 58475 72509 79526 102610 116950 140675 145018 174437 198815 256525 281350 348874 362545 397630 513050 725090 774209 872185 994075 1232653 1548418 1744370 1812725 1988150 2465306 3625450 3871045 4360925 6163265 7742090 8721850 12326530 13161553 19355225 24000479 26323106 30816325 38710450 48000958 61632650 65807765 120002395 131615530 240004790 329038825 408008143 600011975 658077650 816016286 1200023950 2040040715 4080081430 10200203575 20400407150