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163034420 = 22517479513
BaseRepresentation
bin10011011011110…
…11010100110100
3102100210000011212
421231323110310
5313214100140
624102220552
74016525003
oct1155732464
9370700155
10163034420
118403519a
1246724758
1327a13993
141791cc3a
15e4a6765
hex9b7b534

163034420 has 24 divisors (see below), whose sum is σ = 362512584. Its totient is φ = 61377536.

The previous prime is 163034411. The next prime is 163034423. The reversal of 163034420 is 24430361.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29724304 + 133310116 = 5452^2 + 11546^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163034423) 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, 239417 + ... + 240096.

It is an arithmetic number, because the mean of its divisors is an integer number (15104691).

Almost surely, 2163034420 is an apocalyptic number.

163034420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163034420 is an abundant number, since it is smaller than the sum of its proper divisors (199478164).

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

163034420 is a wasteful number, since it uses less digits than its factorization.

163034420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479539 (or 479537 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 163034420 is about 12768.4932548833. The cubic root of 163034420 is about 546.2940045575.

Adding to 163034420 its reverse (24430361), we get a palindrome (187464781).

The spelling of 163034420 in words is "one hundred sixty-three million, thirty-four thousand, four hundred twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 479513 959026 1918052 2397565 4795130 8151721 9590260 16303442 32606884 40758605 81517210 163034420