145728382 has 4 divisors (see below), whose sum is σ = 218592576. Its totient is φ = 72864190.

The previous prime is 145728379. The next prime is 145728383. The reversal of 145728382 is 283827541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×145728382² = 42473522640675848, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145728383) 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 as a sum of consecutive naturals, namely, 36432094 + ... + 36432097.

It is an arithmetic number, because the mean of its divisors is an integer number (54648144).

Almost surely, 2^145728382 is an apocalyptic number.

145728382 is a deficient number, since it is larger than the sum of its proper divisors (72864194).

145728382 is an equidigital number, since it uses as much as digits as its factorization.

145728382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72864193.

The product of its digits is 107520, while the sum is 40.

The square root of 145728382 is about 12071.8011083682. The cubic root of 145728382 is about 526.2370008619.

The spelling of 145728382 in words is "one hundred forty-five million, seven hundred twenty-eight thousand, three hundred eighty-two".