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28613417 = 74087631
BaseRepresentation
bin110110100100…
…1101100101001
31222211201020012
41231021230221
524311112132
62501141305
7465132020
oct155115451
958751205
1028613417
1115173758
1296ba835
135c0ab21
143b2b8b7
1527a30b2
hex1b49b29

28613417 has 4 divisors (see below), whose sum is σ = 32701056. Its totient is φ = 24525780.

The previous prime is 28613383. The next prime is 28613419. The reversal of 28613417 is 71431682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28613417 - 28 = 28613161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28613419) 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, 2043809 + ... + 2043822.

It is an arithmetic number, because the mean of its divisors is an integer number (8175264).

Almost surely, 228613417 is an apocalyptic number.

It is an amenable number.

28613417 is a deficient number, since it is larger than the sum of its proper divisors (4087639).

28613417 is an equidigital number, since it uses as much as digits as its factorization.

28613417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087638.

The product of its digits is 8064, while the sum is 32.

The square root of 28613417 is about 5349.1510541393. The cubic root of 28613417 is about 305.8603924083.

The spelling of 28613417 in words is "twenty-eight million, six hundred thirteen thousand, four hundred seventeen".

Divisors: 1 7 4087631 28613417