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13988360 = 235349709
BaseRepresentation
bin110101010111…
…001000001000
3222022200102102
4311113020020
512040111420
61215452532
7226620251
oct65271010
928280372
1013988360
117994731
124827148
132b8a049
141c01b28
151364a75
hexd57208

13988360 has 16 divisors (see below), whose sum is σ = 31473900. Its totient is φ = 5595328.

The previous prime is 13988341. The next prime is 13988413. The reversal of 13988360 is 6388931.

It can be written as a sum of positive squares in 2 ways, for example, as 13823524 + 164836 = 3718^2 + 406^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174815 + ... + 174894.

Almost surely, 213988360 is an apocalyptic number.

13988360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13988360 is an abundant number, since it is smaller than the sum of its proper divisors (17485540).

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

13988360 is a wasteful number, since it uses less digits than its factorization.

13988360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349720 (or 349716 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 13988360 is about 3740.1016028980. The cubic root of 13988360 is about 240.9474125258.

The spelling of 13988360 in words is "thirteen million, nine hundred eighty-eight thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 349709 699418 1398836 1748545 2797672 3497090 6994180 13988360