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13894049 = 131762869
BaseRepresentation
bin110101000000…
…000110100001
3222010220001102
4311000012201
512024102144
61213444145
7226045301
oct65000641
928126042
1013894049
11792a894
1247a0655
132b56140
141bb9601
151346b4e
hexd401a1

13894049 has 8 divisors (see below), whose sum is σ = 15843240. Its totient is φ = 12070656.

The previous prime is 13894037. The next prime is 13894051. The reversal of 13894049 is 94049831.

It can be written as a sum of positive squares in 4 ways, for example, as 351649 + 13542400 = 593^2 + 3680^2 .

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

It is not a de Polignac number, because 13894049 - 24 = 13894033 is a prime.

It is a super-2 number, since 2×138940492 = 386089195228802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13894009) 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, 31214 + ... + 31655.

It is an arithmetic number, because the mean of its divisors is an integer number (1980405).

Almost surely, 213894049 is an apocalyptic number.

It is an amenable number.

13894049 is a deficient number, since it is larger than the sum of its proper divisors (1949191).

13894049 is a wasteful number, since it uses less digits than its factorization.

13894049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62899.

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

The square root of 13894049 is about 3727.4721997622. The cubic root of 13894049 is about 240.4046933708.

The spelling of 13894049 in words is "thirteen million, eight hundred ninety-four thousand, forty-nine".

Divisors: 1 13 17 221 62869 817297 1068773 13894049