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195212801 = 734979907
BaseRepresentation
bin10111010001010…
…11011000000001
3111121022211121202
423220223120001
5344433302201
631212030545
74560165350
oct1350533001
9447284552
10195212801
11a02132a3
1255462455
133159c344
141bcd7997
1512210c6b
hexba2b601

195212801 has 8 divisors (see below), whose sum is σ = 223742400. Its totient is φ = 166843728.

The previous prime is 195212789. The next prime is 195212803. The reversal of 195212801 is 108212591.

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

It is a cyclic number.

It is not a de Polignac number, because 195212801 - 26 = 195212737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195212803) 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, 37511 + ... + 42396.

It is an arithmetic number, because the mean of its divisors is an integer number (27967800).

Almost surely, 2195212801 is an apocalyptic number.

It is an amenable number.

195212801 is a deficient number, since it is larger than the sum of its proper divisors (28529599).

195212801 is an equidigital number, since it uses as much as digits as its factorization.

195212801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80263.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 195212801 is about 13971.8574642028. The cubic root of 195212801 is about 580.0998648890.

It can be divided in two parts, 19521 and 2801, that added together give a palindrome (22322).

The spelling of 195212801 in words is "one hundred ninety-five million, two hundred twelve thousand, eight hundred one".

Divisors: 1 7 349 2443 79907 559349 27887543 195212801