Search a number
-
+
67680948 = 2235640079
BaseRepresentation
bin1000000100010…
…11101010110100
311201100112210210
410002023222310
5114311242243
610414345420
71451164356
oct402135264
9151315723
1067680948
1135227775
121a7bb270
13110390ca
148dbb0d6
155e1d933
hex408bab4

67680948 has 12 divisors (see below), whose sum is σ = 157922240. Its totient is φ = 22560312.

The previous prime is 67680941. The next prime is 67680953. The reversal of 67680948 is 84908676.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 67680897 and 67680906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67680941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2820028 + ... + 2820051.

Almost surely, 267680948 is an apocalyptic number.

It is an amenable number.

67680948 is an abundant number, since it is smaller than the sum of its proper divisors (90241292).

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

67680948 is a wasteful number, since it uses less digits than its factorization.

67680948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5640086 (or 5640084 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 67680948 is about 8226.8431369511. The cubic root of 67680948 is about 407.5261463395.

The spelling of 67680948 in words is "sixty-seven million, six hundred eighty thousand, nine hundred forty-eight".

Divisors: 1 2 3 4 6 12 5640079 11280158 16920237 22560316 33840474 67680948