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192020240 = 2452400253
BaseRepresentation
bin10110111000111…
…11111100010000
3111101022122020202
423130133330100
5343124121430
631015354332
74521100526
oct1334377420
9441278222
10192020240
1199432715
12543829a8
1330a22159
141b706316
1511cced45
hexb71ff10

192020240 has 20 divisors (see below), whose sum is σ = 446447244. Its totient is φ = 76808064.

The previous prime is 192020221. The next prime is 192020243. The reversal of 192020240 is 42020291.

It can be written as a sum of positive squares in 2 ways, for example, as 19465744 + 172554496 = 4412^2 + 13136^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (192020243) 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, 1200047 + ... + 1200206.

Almost surely, 2192020240 is an apocalyptic number.

192020240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

192020240 is an abundant number, since it is smaller than the sum of its proper divisors (254427004).

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

192020240 is a wasteful number, since it uses less digits than its factorization.

192020240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400266 (or 2400260 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 192020240 is about 13857.1367893948. The cubic root of 192020240 is about 576.9200990296.

It can be divided in two parts, 192020 and 240, that multiplied together give a triangular number (46084800 = T9600).

The spelling of 192020240 in words is "one hundred ninety-two million, twenty thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 2400253 4800506 9601012 12001265 19202024 24002530 38404048 48005060 96010120 192020240