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78948 = 22331743
BaseRepresentation
bin10011010001100100
311000022000
4103101210
510011243
61405300
7446112
oct232144
9130260
1078948
1154351
1239830
1329c1c
1420ab2
15185d3
hex13464

78948 has 48 divisors (see below), whose sum is σ = 221760. Its totient is φ = 24192.

The previous prime is 78941. The next prime is 78977. The reversal of 78948 is 84987.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (78941) by changing a digit.

78948 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1815 + ... + 1857.

It is an arithmetic number, because the mean of its divisors is an integer number (4620).

278948 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110880).

78948 is an abundant number, since it is smaller than the sum of its proper divisors (142812).

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

78948 is a wasteful number, since it uses less digits than its factorization.

78948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 65 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 78948 is about 280.9768673752. The cubic root of 78948 is about 42.8989877017.

The spelling of 78948 in words is "seventy-eight thousand, nine hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 17 18 27 34 36 43 51 54 68 86 102 108 129 153 172 204 258 306 387 459 516 612 731 774 918 1161 1462 1548 1836 2193 2322 2924 4386 4644 6579 8772 13158 19737 26316 39474 78948