140728288 has 24 divisors (see below), whose sum is σ = 291642120. Its totient is φ = 66660480.

The previous prime is 140728267. The next prime is 140728321. The reversal of 140728288 is 882827041.

140728288 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 140728288.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 115123 + ... + 116338.

It is an arithmetic number, because the mean of its divisors is an integer number (12151755).

Almost surely, 2^140728288 is an apocalyptic number.

It is an amenable number.

140728288 is an abundant number, since it is smaller than the sum of its proper divisors (150913832).

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

140728288 is a wasteful number, since it uses less digits than its factorization.

140728288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231490 (or 231482 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 140728288 is about 11862.8954307117. The cubic root of 140728288 is about 520.1482417588.

The spelling of 140728288 in words is "one hundred forty million, seven hundred twenty-eight thousand, two hundred eighty-eight".