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28610141 = 74087163
BaseRepresentation
bin110110100100…
…0111001011101
31222211112201212
41231020321131
524311011031
62501114205
7465116330
oct155107135
958745655
1028610141
111517124a
1296b8965
135c094a1
143b2a617
1527a212b
hex1b48e5d

28610141 has 4 divisors (see below), whose sum is σ = 32697312. Its totient is φ = 24522972.

The previous prime is 28610129. The next prime is 28610149. The reversal of 28610141 is 14101682.

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 28610141 - 26 = 28610077 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 (28610149) 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, 2043575 + ... + 2043588.

It is an arithmetic number, because the mean of its divisors is an integer number (8174328).

Almost surely, 228610141 is an apocalyptic number.

It is an amenable number.

28610141 is a deficient number, since it is larger than the sum of its proper divisors (4087171).

28610141 is an equidigital number, since it uses as much as digits as its factorization.

28610141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087170.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 28610141 is about 5348.8448285588. The cubic root of 28610141 is about 305.8487191330.

The spelling of 28610141 in words is "twenty-eight million, six hundred ten thousand, one hundred forty-one".

Divisors: 1 7 4087163 28610141