146223505 has 8 divisors (see below), whose sum is σ = 175558824. Its totient is φ = 116918400.

The previous prime is 146223503. The next prime is 146223569. The reversal of 146223505 is 505322641.

It can be written as a sum of positive squares in 4 ways, for example, as 1430416 + 144793089 = 1196^2 + 12033^2 .

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

It is not a de Polignac number, because 146223505 - 2¹ = 146223503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146223503) 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 7 ways as a sum of consecutive naturals, for example, 4995 + ... + 17815.

It is an arithmetic number, because the mean of its divisors is an integer number (21944853).

Almost surely, 2^146223505 is an apocalyptic number.

It is an amenable number.

146223505 is a deficient number, since it is larger than the sum of its proper divisors (29335319).

146223505 is a wasteful number, since it uses less digits than its factorization.

146223505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15107.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 146223505 is about 12092.2911393995. The cubic root of 146223505 is about 526.8323036050.

The spelling of 146223505 in words is "one hundred forty-six million, two hundred twenty-three thousand, five hundred five".