145748728 has 32 divisors (see below), whose sum is σ = 280551600. Its totient is φ = 70956288.

The previous prime is 145748711. The next prime is 145748737. The reversal of 145748728 is 827847541.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 57700 + ... + 60172.

Almost surely, 2^145748728 is an apocalyptic number.

It is an amenable number.

145748728 is a deficient number, since it is larger than the sum of its proper divisors (134802872).

145748728 is a wasteful number, since it uses less digits than its factorization.

145748728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671 (or 2667 counting only the distinct ones).

The product of its digits is 501760, while the sum is 46.

The square root of 145748728 is about 12072.6437866774. The cubic root of 145748728 is about 526.2614900740.

The spelling of 145748728 in words is "one hundred forty-five million, seven hundred forty-eight thousand, seven hundred twenty-eight".