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13970688 = 28318191
BaseRepresentation
bin110101010010…
…110100000000
3222021210011220
4311102310000
512034030223
61215235040
7226514604
oct65226400
928253156
1013970688
117982426
124818a80
132b81ca4
141bd9504
15135e6e3
hexd52d00

13970688 has 36 divisors (see below), whose sum is σ = 37184448. Its totient is φ = 4656640.

The previous prime is 13970659. The next prime is 13970689. The reversal of 13970688 is 88607931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13970689) 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, 8328 + ... + 9863.

Almost surely, 213970688 is an apocalyptic number.

It is an amenable number.

13970688 is an abundant number, since it is smaller than the sum of its proper divisors (23213760).

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

13970688 is an equidigital number, since it uses as much as digits as its factorization.

13970688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18210 (or 18196 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 13970688 is about 3737.7383536037. The cubic root of 13970688 is about 240.8459039134.

The spelling of 13970688 in words is "thirteen million, nine hundred seventy thousand, six hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 256 384 768 18191 36382 54573 72764 109146 145528 218292 291056 436584 582112 873168 1164224 1746336 2328448 3492672 4656896 6985344 13970688