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28800141 = 39600047
BaseRepresentation
bin110110111011…
…1010010001101
32000012012100220
41231313102031
524333101031
62505141553
7466540266
oct155672215
960165326
1028800141
1115290a77
12978a8b9
135c74b06
143b7996d
1527dd596
hex1b7748d

28800141 has 4 divisors (see below), whose sum is σ = 38400192. Its totient is φ = 19200092.

The previous prime is 28800137. The next prime is 28800199. The reversal of 28800141 is 14100882.

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 28800141 - 22 = 28800137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28800131) 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, 4800021 + ... + 4800026.

It is an arithmetic number, because the mean of its divisors is an integer number (9600048).

Almost surely, 228800141 is an apocalyptic number.

It is an amenable number.

28800141 is a deficient number, since it is larger than the sum of its proper divisors (9600051).

28800141 is an equidigital number, since it uses as much as digits as its factorization.

28800141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9600050.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 28800141 is about 5366.5762828828. The cubic root of 28800141 is about 306.5242731864.

The spelling of 28800141 in words is "twenty-eight million, eight hundred thousand, one hundred forty-one".

Divisors: 1 3 9600047 28800141