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13750641 = 3571797
BaseRepresentation
bin110100011101…
…000101110001
3221212121100000
4310131011301
512010010031
61210420213
7224610222
oct64350561
927777300
1013750641
117842073
124731669
132b05a98
141b7d249
1513193e6
hexd1d171

13750641 has 24 divisors (see below), whose sum is σ = 20913984. Its totient is φ = 9026640.

The previous prime is 13750609. The next prime is 13750657. The reversal of 13750641 is 14605731.

13750641 is a `hidden beast` number, since 13 + 7 + 5 + 0 + 641 = 666.

13750641 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13750641 - 25 = 13750609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13750141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16855 + ... + 17651.

It is an arithmetic number, because the mean of its divisors is an integer number (871416).

Almost surely, 213750641 is an apocalyptic number.

It is an amenable number.

13750641 is a deficient number, since it is larger than the sum of its proper divisors (7163343).

13750641 is an frugal number, since it uses more digits than its factorization.

13750641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 13750641 is about 3708.1856749629. The cubic root of 13750641 is about 239.5747155833.

The spelling of 13750641 in words is "thirteen million, seven hundred fifty thousand, six hundred forty-one".

Divisors: 1 3 9 27 71 81 213 243 639 797 1917 2391 5751 7173 17253 21519 56587 64557 169761 193671 509283 1527849 4583547 13750641