145728286 has 24 divisors (see below), whose sum is σ = 241238592. Its totient is φ = 65973600.

The previous prime is 145728269. The next prime is 145728287. The reversal of 145728286 is 682827541.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145728287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66931 + ... + 69073.

It is an arithmetic number, because the mean of its divisors is an integer number (10051608).

Almost surely, 2^145728286 is an apocalyptic number.

145728286 is a deficient number, since it is larger than the sum of its proper divisors (95510306).

145728286 is a wasteful number, since it uses less digits than its factorization.

145728286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448 (or 2437 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 145728286 is about 12071.7971321589. The cubic root of 145728286 is about 526.2368853072.

The spelling of 145728286 in words is "one hundred forty-five million, seven hundred twenty-eight thousand, two hundred eighty-six".