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20638024095 = 351337297797
BaseRepresentation
bin10011001110000111…
…110100000110011111
31222021022002020202210
4103032013310012133
5314231313232340
613251520251503
71330300211313
oct231607640637
958238066683
1020638024095
118830698a67
123bbb770b93
131c3b9278a0
14ddad29b43
1580bc9a180
hex4ce1f419f

20638024095 has 96 divisors (see below), whose sum is σ = 36971097408. Its totient is φ = 9771466752.

The previous prime is 20638024073. The next prime is 20638024111. The reversal of 20638024095 is 59042083602.

It is a happy number.

It is not a de Polignac number, because 20638024095 - 25 = 20638024063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25894237 + ... + 25895033.

It is an arithmetic number, because the mean of its divisors is an integer number (385115598).

Almost surely, 220638024095 is an apocalyptic number.

20638024095 is a deficient number, since it is larger than the sum of its proper divisors (16333073313).

20638024095 is a wasteful number, since it uses less digits than its factorization.

20638024095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 20638024095 in words is "twenty billion, six hundred thirty-eight million, twenty-four thousand, ninety-five".

Divisors: 1 3 5 13 15 37 39 65 97 111 185 195 291 481 485 555 797 1261 1369 1443 1455 2391 2405 3589 3783 3985 4107 6305 6845 7215 10361 10767 11955 17797 17945 18915 20535 29489 31083 46657 51805 53391 53835 77309 88467 88985 132793 139971 147445 155415 231927 233285 266955 383357 386545 398379 442335 663965 699855 1005017 1091093 1150071 1159635 1726309 1916785 1991895 2860433 3015051 3273279 5025085 5178927 5455465 5750355 8581299 8631545 14184209 14302165 15075255 16366395 25894635 37185629 42552627 42906495 70921045 105836021 111556887 185928145 212763135 317508063 529180105 557784435 1375868273 1587540315 4127604819 6879341365 20638024095