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195219290 = 2579728751
BaseRepresentation
bin10111010001011…
…00111101011010
3111121100011112002
423220230331122
5344434004130
631212121002
74560223310
oct1350547532
9447304462
10195219290
11a0218162
1255466162
13315a2296
141bcda0b0
1512212b45
hexba2cf5a

195219290 has 32 divisors (see below), whose sum is σ = 405748224. Its totient is φ = 66240000.

The previous prime is 195219287. The next prime is 195219371. The reversal of 195219290 is 92912591.

It is a super-2 number, since 2×1952192902 = 76221142376208200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7586 + ... + 21165.

It is an arithmetic number, because the mean of its divisors is an integer number (12679632).

Almost surely, 2195219290 is an apocalyptic number.

195219290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195219290 is an abundant number, since it is smaller than the sum of its proper divisors (210528934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195219290 is a wasteful number, since it uses less digits than its factorization.

195219290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28862.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 195219290 is about 13972.0896790709. The cubic root of 195219290 is about 580.1062924496.

The spelling of 195219290 in words is "one hundred ninety-five million, two hundred nineteen thousand, two hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 97 194 485 679 970 1358 3395 6790 28751 57502 143755 201257 287510 402514 1006285 2012570 2788847 5577694 13944235 19521929 27888470 39043858 97609645 195219290