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11112140 = 2251379541
BaseRepresentation
bin101010011000…
…111011001100
3202220112222202
4222120323030
510321042030
61034101032
7163310624
oct52307314
922815882
1011112140
1162aa796
12387a778
1323c0b40
141693884
15e97745
hexa98ecc

11112140 has 48 divisors (see below), whose sum is σ = 25495680. Its totient is φ = 4043520.

The previous prime is 11112137. The next prime is 11112149. The reversal of 11112140 is 4121111.

Adding to 11112140 its reverse (4121111), we get a palindrome (15233251).

11112140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11112149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20270 + ... + 20810.

It is an arithmetic number, because the mean of its divisors is an integer number (531160).

Almost surely, 211112140 is an apocalyptic number.

11112140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11112140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12747840).

11112140 is an abundant number, since it is smaller than the sum of its proper divisors (14383540).

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

11112140 is a wasteful number, since it uses less digits than its factorization.

11112140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 11112140 is about 3333.4876630940. The cubic root of 11112140 is about 223.1512042027.

The spelling of 11112140 in words is "eleven million, one hundred twelve thousand, one hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 79 130 158 260 316 395 541 790 1027 1082 1580 2054 2164 2705 4108 5135 5410 7033 10270 10820 14066 20540 28132 35165 42739 70330 85478 140660 170956 213695 427390 555607 854780 1111214 2222428 2778035 5556070 11112140