145828728 has 32 divisors (see below), whose sum is σ = 405080400. Its totient is φ = 48609504.

The previous prime is 145828723. The next prime is 145828751. The reversal of 145828728 is 827828541.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145828721) 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, 337351 + ... + 337782.

Almost surely, 2^145828728 is an apocalyptic number.

145828728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

145828728 is an abundant number, since it is smaller than the sum of its proper divisors (259251672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145828728 is a wasteful number, since it uses less digits than its factorization.

145828728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675148 (or 675138 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 145828728 is about 12075.9566080704. The cubic root of 145828728 is about 526.3577589956.

The spelling of 145828728 in words is "one hundred forty-five million, eight hundred twenty-eight thousand, seven hundred twenty-eight".