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190500780220 = 22510987385679
BaseRepresentation
bin1011000101101010111…
…0110011100010111100
3200012201022211022200121
42301122232303202330
511110121144431340
6223303112504324
716522533625462
oct2613256634274
9605638738617
10190500780220
11738777a6843
1230b063ab0a4
1314c6c2cac7a
149312678832
154e4e53594a
hex2c5abb38bc

190500780220 has 24 divisors (see below), whose sum is σ = 403721841600. Its totient is φ = 75501225792.

The previous prime is 190500780101. The next prime is 190500780227. The reversal of 190500780220 is 22087005091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190500780227) 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, 43690660 + ... + 43695019.

It is an arithmetic number, because the mean of its divisors is an integer number (16821743400).

Almost surely, 2190500780220 is an apocalyptic number.

190500780220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190500780220 is an abundant number, since it is smaller than the sum of its proper divisors (213221061380).

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

190500780220 is a wasteful number, since it uses less digits than its factorization.

190500780220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87385797 (or 87385795 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 190500780220 in words is "one hundred ninety billion, five hundred million, seven hundred eighty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 109 218 436 545 1090 2180 87385679 174771358 349542716 436928395 873856790 1747713580 9525039011 19050078022 38100156044 47625195055 95250390110 190500780220