145389727 has 8 divisors (see below), whose sum is σ = 167469056. Its totient is φ = 123637752.

The previous prime is 145389703. The next prime is 145389749. The reversal of 145389727 is 727983541.

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

It is not a de Polignac number, because 145389727 - 2¹¹ = 145387679 is a prime.

It is a super-2 number, since 2×145389727² = 42276345434269058, 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 (145389427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80883 + ... + 82660.

It is an arithmetic number, because the mean of its divisors is an integer number (20933632).

Almost surely, 2^145389727 is an apocalyptic number.

145389727 is a deficient number, since it is larger than the sum of its proper divisors (22079329).

145389727 is a wasteful number, since it uses less digits than its factorization.

145389727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163677.

The product of its digits is 423360, while the sum is 46.

The square root of 145389727 is about 12057.7662525030. The cubic root of 145389727 is about 525.8290478014.

The spelling of 145389727 in words is "one hundred forty-five million, three hundred eighty-nine thousand, seven hundred twenty-seven".