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13728701 = 79720219
BaseRepresentation
bin110100010111…
…101110111101
3221211111020102
4310113232331
512003304301
61210130445
7224456240
oct64275675
927744212
1013728701
117827638
124720a25
132ac8abc
141b75257
151312b6b
hexd17bbd

13728701 has 8 divisors (see below), whose sum is σ = 15852480. Its totient is φ = 11645568.

The previous prime is 13728679. The next prime is 13728703. The reversal of 13728701 is 10782731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13728701 - 210 = 13727677 is a prime.

It is a super-2 number, since 2×137287012 = 376954462294802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13728703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9431 + ... + 10788.

It is an arithmetic number, because the mean of its divisors is an integer number (1981560).

Almost surely, 213728701 is an apocalyptic number.

It is an amenable number.

13728701 is a deficient number, since it is larger than the sum of its proper divisors (2123779).

13728701 is an equidigital number, since it uses as much as digits as its factorization.

13728701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20323.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 13728701 is about 3705.2261739332. The cubic root of 13728701 is about 239.4472289857.

The spelling of 13728701 in words is "thirteen million, seven hundred twenty-eight thousand, seven hundred one".

Divisors: 1 7 97 679 20219 141533 1961243 13728701