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13850144 = 257211273
BaseRepresentation
bin110100110101…
…011000100000
3222001122211022
4310311120200
512021201034
61212505012
7225503300
oct64653040
928048738
1013850144
1178aa900
12477b168
132b3c169
141ba7600
151338b2e
hexd35620

13850144 has 108 divisors (see below), whose sum is σ = 35342622. Its totient is φ = 5322240.

The previous prime is 13850143. The next prime is 13850147. The reversal of 13850144 is 44105831.

It can be written as a sum of positive squares in only one way, i.e., 11478544 + 2371600 = 3388^2 + 1540^2 .

It is not an unprimeable number, because it can be changed into a prime (13850143) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 189692 + ... + 189764.

Almost surely, 213850144 is an apocalyptic number.

13850144 is a gapful number since it is divisible by the number (14) 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 13850144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17671311).

13850144 is an abundant number, since it is smaller than the sum of its proper divisors (21492478).

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

13850144 is a wasteful number, since it uses less digits than its factorization.

13850144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 13850144 is about 3721.5781598671. The cubic root of 13850144 is about 240.1512010190.

Adding to 13850144 its reverse (44105831), we get a palindrome (57955975).

The spelling of 13850144 in words is "thirteen million, eight hundred fifty thousand, one hundred forty-four".

Divisors: 1 2 4 7 8 11 14 16 22 28 32 44 49 56 73 77 88 98 112 121 146 154 176 196 224 242 292 308 352 392 484 511 539 584 616 784 803 847 968 1022 1078 1168 1232 1568 1606 1694 1936 2044 2156 2336 2464 3212 3388 3577 3872 4088 4312 5621 5929 6424 6776 7154 8176 8624 8833 11242 11858 12848 13552 14308 16352 17248 17666 22484 23716 25696 27104 28616 35332 39347 44968 47432 57232 61831 70664 78694 89936 94864 114464 123662 141328 157388 179872 189728 247324 282656 314776 432817 494648 629552 865634 989296 1259104 1731268 1978592 3462536 6925072 13850144