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13902889 = 71113171943
BaseRepresentation
bin110101000010…
…010000101001
3222011100011211
4311002100221
512024343024
61213553121
7226113130
oct65022051
928140154
1013902889
1179364a0
1247a57a1
132b5a180
141bbc917
151349594
hexd42429

13902889 has 64 divisors (see below), whose sum is σ = 21288960. Its totient is φ = 8709120.

The previous prime is 13902883. The next prime is 13902893. The reversal of 13902889 is 98820931.

13902889 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 13902889 - 27 = 13902761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13902883) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 323302 + ... + 323344.

It is an arithmetic number, because the mean of its divisors is an integer number (332640).

Almost surely, 213902889 is an apocalyptic number.

13902889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13902889 is a deficient number, since it is larger than the sum of its proper divisors (7386071).

13902889 is a wasteful number, since it uses less digits than its factorization.

13902889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 13902889 is about 3728.6578014079. The cubic root of 13902889 is about 240.4556678789.

The spelling of 13902889 in words is "thirteen million, nine hundred two thousand, eight hundred eighty-nine".

Divisors: 1 7 11 13 17 19 43 77 91 119 133 143 187 209 221 247 301 323 473 559 731 817 1001 1309 1463 1547 1729 2261 2431 2717 3311 3553 3913 4199 5117 5719 6149 8041 8987 9503 10621 13889 17017 19019 24871 29393 43043 46189 56287 62909 66521 74347 97223 104533 116831 152779 180557 323323 731731 817817 1069453 1263899 1986127 13902889