Search a number
-
+
78233495 = 538340853
BaseRepresentation
bin1001010100110…
…11111110010111
312110012200011212
410222123332113
5130011432440
611432452035
71636654664
oct452337627
9173180155
1078233495
1140184a8a
122224a01b
1313292312
14a566a6b
156d05465
hex4a9bf97

78233495 has 8 divisors (see below), whose sum is σ = 94127616. Its totient is φ = 62421856.

The previous prime is 78233471. The next prime is 78233497. The reversal of 78233495 is 59433287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-78233495 is a prime.

It is a super-2 number, since 2×782334952 = 12240959479830050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78233497) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 18512 + ... + 22341.

It is an arithmetic number, because the mean of its divisors is an integer number (11765952).

Almost surely, 278233495 is an apocalyptic number.

78233495 is a deficient number, since it is larger than the sum of its proper divisors (15894121).

78233495 is a wasteful number, since it uses less digits than its factorization.

78233495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41241.

The product of its digits is 181440, while the sum is 41.

The square root of 78233495 is about 8844.9700395196. The cubic root of 78233495 is about 427.6917872295.

The spelling of 78233495 in words is "seventy-eight million, two hundred thirty-three thousand, four hundred ninety-five".

Divisors: 1 5 383 1915 40853 204265 15646699 78233495