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8031413 = 13617801
BaseRepresentation
bin11110101000110010110101
3120010001000202
4132220302311
54024001123
6444050245
7125160125
oct36506265
916101022
108031413
114596135
122833985
131882820
1410d0c85
15a89a28
hex7a8cb5

8031413 has 4 divisors (see below), whose sum is σ = 8649228. Its totient is φ = 7413600.

The previous prime is 8031409. The next prime is 8031421. The reversal of 8031413 is 3141308.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4318084 + 3713329 = 2078^2 + 1927^2 .

It is a cyclic number.

It is not a de Polignac number, because 8031413 - 22 = 8031409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8031403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308888 + ... + 308913.

It is an arithmetic number, because the mean of its divisors is an integer number (2162307).

Almost surely, 28031413 is an apocalyptic number.

It is an amenable number.

8031413 is a deficient number, since it is larger than the sum of its proper divisors (617815).

8031413 is a wasteful number, since it uses less digits than its factorization.

8031413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617814.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 8031413 is about 2833.9747705299. The cubic root of 8031413 is about 200.2614331147.

The spelling of 8031413 in words is "eight million, thirty-one thousand, four hundred thirteen".

Divisors: 1 13 617801 8031413