145728307 has 2 divisors, whose sum is σ = 145728308. Its totient is φ = 145728306.

The previous prime is 145728293. The next prime is 145728337. The reversal of 145728307 is 703827541.

It is a weak prime.

It is an emirp because it is prime and its reverse (703827541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145728307 - 2¹⁹ = 145204019 is a prime.

It is a super-2 number, since 2×145728307² = 42473478922172498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145728337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72864153 + 72864154.

It is an arithmetic number, because the mean of its divisors is an integer number (72864154).

Almost surely, 2^145728307 is an apocalyptic number.

145728307 is a deficient number, since it is larger than the sum of its proper divisors (1).

145728307 is an equidigital number, since it uses as much as digits as its factorization.

145728307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 145728307 is about 12071.7980019548. The cubic root of 145728307 is about 526.2369105848.

The spelling of 145728307 in words is "one hundred forty-five million, seven hundred twenty-eight thousand, three hundred seven".