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13785701 = 29475369
BaseRepresentation
bin110100100101…
…101001100101
3221221101102112
4310211221211
512012120301
61211250405
7225114356
oct64455145
927841375
1013785701
117866446
124749a05
132b18a27
141b8bd2d
1513249bb
hexd25a65

13785701 has 4 divisors (see below), whose sum is σ = 14261100. Its totient is φ = 13310304.

The previous prime is 13785689. The next prime is 13785713. The reversal of 13785701 is 10758731.

13785701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13785689) and next prime (13785713).

It can be written as a sum of positive squares in 2 ways, for example, as 11222500 + 2563201 = 3350^2 + 1601^2 .

It is not a de Polignac number, because 13785701 - 218 = 13523557 is a prime.

It is a super-2 number, since 2×137857012 = 380091104122802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13785781) 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, 237656 + ... + 237713.

It is an arithmetic number, because the mean of its divisors is an integer number (3565275).

Almost surely, 213785701 is an apocalyptic number.

It is an amenable number.

13785701 is a deficient number, since it is larger than the sum of its proper divisors (475399).

13785701 is an equidigital number, since it uses as much as digits as its factorization.

13785701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475398.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 13785701 is about 3712.9100446954. The cubic root of 13785701 is about 239.7781572726.

The spelling of 13785701 in words is "thirteen million, seven hundred eighty-five thousand, seven hundred one".

Divisors: 1 29 475369 13785701