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239669020 = 22571168781
BaseRepresentation
bin11100100100100…
…00111100011100
3121200222110002101
432102100330130
5442323402040
635440534444
75640103333
oct1622207434
9550873071
10239669020
11113317978
1268321424
133a8662b6
1423b8ad1a
151609309a
hexe490f1c

239669020 has 24 divisors (see below), whose sum is σ = 510396768. Its totient is φ = 94516800.

The previous prime is 239669011. The next prime is 239669069. The reversal of 239669020 is 20966932.

239669020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82971 + ... + 85810.

It is an arithmetic number, because the mean of its divisors is an integer number (21266532).

Almost surely, 2239669020 is an apocalyptic number.

239669020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

239669020 is an abundant number, since it is smaller than the sum of its proper divisors (270727748).

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

239669020 is a wasteful number, since it uses less digits than its factorization.

239669020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168861 (or 168859 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 239669020 is about 15481.2473657648. The cubic root of 239669020 is about 621.1606942625.

The spelling of 239669020 in words is "two hundred thirty-nine million, six hundred sixty-nine thousand, twenty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 1420 168781 337562 675124 843905 1687810 3375620 11983451 23966902 47933804 59917255 119834510 239669020