Search a number
-
+
78203341 = 530314747
BaseRepresentation
bin1001010100101…
…00100111001101
312110011010211001
410222110213031
5130010001331
611432100301
71636501036
oct452244715
9173133731
1078203341
1140164367
1222234691
1313281688
14a559a8d
156ceb561
hex4a949cd

78203341 has 4 divisors (see below), whose sum is σ = 78223392. Its totient is φ = 78183292.

The previous prime is 78203339. The next prime is 78203351. The reversal of 78203341 is 14330287.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78203341 - 21 = 78203339 is a prime.

It is a super-2 number, since 2×782033412 = 12231525087124562, 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 (78203351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2071 + ... + 12676.

It is an arithmetic number, because the mean of its divisors is an integer number (19555848).

Almost surely, 278203341 is an apocalyptic number.

It is an amenable number.

78203341 is a deficient number, since it is larger than the sum of its proper divisors (20051).

78203341 is a wasteful number, since it uses less digits than its factorization.

78203341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20050.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 78203341 is about 8843.2652906039. The cubic root of 78203341 is about 427.6368309074.

The spelling of 78203341 in words is "seventy-eight million, two hundred three thousand, three hundred forty-one".

Divisors: 1 5303 14747 78203341