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163989696 = 2631365701
BaseRepresentation
bin10011100011001…
…00100011000000
3102102120112120110
421301210203000
5313440132241
624134511320
74030614033
oct1161444300
9372515513
10163989696
1184627982
1246b05540
1327c89730
1417acb01a
15e5e4816
hex9c648c0

163989696 has 56 divisors (see below), whose sum is σ = 467272624. Its totient is φ = 50457600.

The previous prime is 163989691. The next prime is 163989697. The reversal of 163989696 is 696989361.

It is not an unprimeable number, because it can be changed into a prime (163989691) 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, 30355 + ... + 35346.

It is an arithmetic number, because the mean of its divisors is an integer number (8344154).

Almost surely, 2163989696 is an apocalyptic number.

163989696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163989696 is an abundant number, since it is smaller than the sum of its proper divisors (303282928).

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

163989696 is a wasteful number, since it uses less digits than its factorization.

163989696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65729 (or 65719 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 57.

The square root of 163989696 is about 12805.8461649358. The cubic root of 163989696 is about 547.3589036132.

The spelling of 163989696 in words is "one hundred sixty-three million, nine hundred eighty-nine thousand, six hundred ninety-six".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 64 78 96 104 156 192 208 312 416 624 832 1248 2496 65701 131402 197103 262804 394206 525608 788412 854113 1051216 1576824 1708226 2102432 2562339 3153648 3416452 4204864 5124678 6307296 6832904 10249356 12614592 13665808 20498712 27331616 40997424 54663232 81994848 163989696