Search a number
-
+
78450 = 2352523
BaseRepresentation
bin10011001001110010
310222121120
4103021302
510002300
61403110
7444501
oct231162
9128546
1078450
1153a39
1239496
1329928
1420838
15183a0
hex13272

78450 has 24 divisors (see below), whose sum is σ = 194928. Its totient is φ = 20880.

The previous prime is 78439. The next prime is 78467. The reversal of 78450 is 5487.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 78450.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 78450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112 + ... + 411.

It is an arithmetic number, because the mean of its divisors is an integer number (8122).

278450 is an apocalyptic number.

78450 is an abundant number, since it is smaller than the sum of its proper divisors (116478).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97464).

78450 is a wasteful number, since it uses less digits than its factorization.

78450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 78450 is about 280.0892714832. The cubic root of 78450 is about 42.8085958221.

It can be divided in two parts, 78 and 450, that added together give a triangular number (528 = T32).

The spelling of 78450 in words is "seventy-eight thousand, four hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 50 75 150 523 1046 1569 2615 3138 5230 7845 13075 15690 26150 39225 78450