140728225 has 24 divisors (see below), whose sum is σ = 191684160. Its totient is φ = 101640000.

The previous prime is 140728183. The next prime is 140728241. The reversal of 140728225 is 522827041.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-140728225 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 39831 + ... + 43219.

It is an arithmetic number, because the mean of its divisors is an integer number (7986840).

Almost surely, 2^140728225 is an apocalyptic number.

It is an amenable number.

140728225 is a deficient number, since it is larger than the sum of its proper divisors (50955935).

140728225 is a wasteful number, since it uses less digits than its factorization.

140728225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561 (or 3556 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 140728225 is about 11862.8927753731. The cubic root of 140728225 is about 520.1481641404.

The spelling of 140728225 in words is "one hundred forty million, seven hundred twenty-eight thousand, two hundred twenty-five".