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10890404180 = 225544520209
BaseRepresentation
bin10100010010001111…
…00110000101010100
31001002222012212000222
422021013212011110
5134300420413210
65000351053512
7533605623335
oct121107460524
931088185028
1010890404180
114689392937
12213b211298
131047304256
1475450228c
1543b141655
hex2891e6154

10890404180 has 12 divisors (see below), whose sum is σ = 22869848820. Its totient is φ = 4356161664.

The previous prime is 10890404179. The next prime is 10890404183. The reversal of 10890404180 is 8140409801.

It can be written as a sum of positive squares in 2 ways, for example, as 7877272516 + 3013131664 = 88754^2 + 54892^2 .

It is a super-2 number, since 2×108904041802 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10890404180.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10890404183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272260085 + ... + 272260124.

It is an arithmetic number, because the mean of its divisors is an integer number (1905820735).

Almost surely, 210890404180 is an apocalyptic number.

10890404180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10890404180 is an abundant number, since it is smaller than the sum of its proper divisors (11979444640).

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

10890404180 is a wasteful number, since it uses less digits than its factorization.

10890404180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544520218 (or 544520216 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The spelling of 10890404180 in words is "ten billion, eight hundred ninety million, four hundred four thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 544520209 1089040418 2178080836 2722601045 5445202090 10890404180