Search a number
-
+
78254483 = 194787631
BaseRepresentation
bin1001010101000…
…01000110010011
312110020201222012
410222201012103
5130013120413
611433133135
71640103116
oct452410623
9173221865
1078254483
114019982a
122225a1ab
131329ba38
14a57057d
156d0b7a8
hex4aa1193

78254483 has 8 divisors (see below), whose sum is σ = 84126720. Its totient is φ = 72557640.

The previous prime is 78254443. The next prime is 78254489. The reversal of 78254483 is 38445287.

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

It is a cyclic number.

It is not a de Polignac number, because 78254483 - 214 = 78238099 is a prime.

It is a super-2 number, since 2×782544832 = 12247528219194578, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78254483.

It is not an unprimeable number, because it can be changed into a prime (78254489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42923 + ... + 44708.

It is an arithmetic number, because the mean of its divisors is an integer number (10515840).

Almost surely, 278254483 is an apocalyptic number.

78254483 is a deficient number, since it is larger than the sum of its proper divisors (5872237).

78254483 is a wasteful number, since it uses less digits than its factorization.

78254483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87697.

The product of its digits is 215040, while the sum is 41.

The square root of 78254483 is about 8846.1563969896. The cubic root of 78254483 is about 427.7300299824.

The spelling of 78254483 in words is "seventy-eight million, two hundred fifty-four thousand, four hundred eighty-three".

Divisors: 1 19 47 893 87631 1664989 4118657 78254483