Search a number
78235 = 515647
BaseRepresentation
bin10011000110011011
310222022121
4103012123
510000420
61402111
7444043
oct230633
9128277
1078235
1153863
1239337
13297c1
1420723
15182aa
hex1319b

78235 has 4 divisors (see below), whose sum is σ = 93888. Its totient is φ = 62584.

The previous prime is 78233. The next prime is 78241. The reversal of 78235 is 53287.

Subtracting from 78235 its sum of digits (25), we obtain a triangular number (78210 = T395).

It can be divided in two parts, 78 and 235, that added together give a palindrome (313).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53287 = 134099.

It is a cyclic number.

It is not a de Polignac number, because 78235 - 21 = 78233 is a prime.

It is a super-2 number, since 2×782352 = 12241430450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7819 + ... + 7828.

It is an arithmetic number, because the mean of its divisors is an integer number (23472).

278235 is an apocalyptic number.

78235 is a deficient number, since it is larger than the sum of its proper divisors (15653).

78235 is a wasteful number, since it uses less digits than its factorization.

78235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15652.

The product of its digits is 1680, while the sum is 25.

The square root of 78235 is about 279.7052019538. The cubic root of 78235 is about 42.7694529755.

The spelling of 78235 in words is "seventy-eight thousand, two hundred thirty-five".

Divisors: 1 5 15647 78235