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163928054 = 281964027
BaseRepresentation
bin10011100010101…
…01011111110110
3102102110102000102
421301111133312
5313431144204
624133314102
74030236233
oct1161253766
9372412012
10163928054
1184595634
1246a95932
1327c67664
1417ab278a
15e5d141e
hex9c557f6

163928054 has 4 divisors (see below), whose sum is σ = 245892084. Its totient is φ = 81964026.

The previous prime is 163928027. The next prime is 163928069. The reversal of 163928054 is 450829361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450829361 = 3531277137.

It is a junction number, because it is equal to n+sod(n) for n = 163927999 and 163928017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40982012 + ... + 40982015.

It is an arithmetic number, because the mean of its divisors is an integer number (61473021).

Almost surely, 2163928054 is an apocalyptic number.

163928054 is a deficient number, since it is larger than the sum of its proper divisors (81964030).

163928054 is an equidigital number, since it uses as much as digits as its factorization.

163928054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81964029.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 163928054 is about 12803.4391473541. The cubic root of 163928054 is about 547.2903128688.

The spelling of 163928054 in words is "one hundred sixty-three million, nine hundred twenty-eight thousand, fifty-four".

Divisors: 1 2 81964027 163928054